JavaTM 2 Platform
Std. Ed. v1.3.1

java.sql
Interface DatabaseMetaData


public interface DatabaseMetaData

Comprehensive information about the database as a whole.

Many of the methods here return lists of information in the form of ResultSet objects. You can use the normal ResultSet methods such as getString and getInt to retrieve the data from these ResultSet. If a given form of metadata is not available, these methods should throw an SQLException.

Some of these methods take arguments that are String patterns. These arguments all have names such as fooPattern. Within a pattern String, "%" means match any substring of 0 or more characters, and "_" means match any one character. Only metadata entries matching the search pattern are returned. If a search pattern argument is set to a null ref, that argument's criteria will be dropped from the search.

An SQLException will be thrown if a driver does not support a meta data method. In the case of methods that return a ResultSet, either a ResultSet (which may be empty) is returned or a SQLException is thrown.


Field Summary
static int bestRowNotPseudo
          Indicates that the best row identifier is NOT a pseudo column.
static int bestRowPseudo
          Indicates that the best row identifier is a pseudo column.
static int bestRowSession
          Indicates that the scope of the best row identifier is the remainder of the current session.
static int bestRowTemporary
          Indicates that the scope of the best row identifier is very temporary, lasting only while the row is being used.
static int bestRowTransaction
          Indicates that the scope of the best row identifier is the remainder of the current transaction.
static int bestRowUnknown
          Indicates that the best row identifier may or may not be a pseudo column.
static int columnNoNulls
          Indicates that the column might not allow NULL values.
static int columnNullable
          Indicates that the column definitely allows NULL values.
static int columnNullableUnknown
          Indicates that the nullability of columns is unknown.
static int importedKeyCascade
          A possible value for the columns UPDATE_RULE and DELETE_RULE in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.
static int importedKeyInitiallyDeferred
          A possible value for the column DEFERRABILITY in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.
static int importedKeyInitiallyImmediate
          A possible value for the column DEFERRABILITY in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.
static int importedKeyNoAction
          A possible value for the columns UPDATE_RULE and DELETE_RULE in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.
static int importedKeyNotDeferrable
          A possible value for the column DEFERRABILITY in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.
static int importedKeyRestrict
          A possible value for the columns UPDATE_RULE and DELETE_RULE in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.
static int importedKeySetDefault
          A possible value for the columns UPDATE_RULE and DELETE_RULE in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.
static int importedKeySetNull
          A possible value for the columns UPDATE_RULE and DELETE_RULE in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.
static int procedureColumnIn
          Indicates that the column stores IN parameters.
static int procedureColumnInOut
          Indicates that the column stores INOUT parameters.
static int procedureColumnOut
          Indicates that the column stores OUT parameters.
static int procedureColumnResult
          Indicates that the column stores results.
static int procedureColumnReturn
          Indicates that the column stores return values.
static int procedureColumnUnknown
          Indicates that type of the column is unknown.
static int procedureNoNulls
          Indicates that NULL values are not allowed.
static int procedureNoResult
          A possible value for column PROCEDURE_TYPE in the ResultSet object returned by the method getProcedures.
static int procedureNullable
          Indicates that NULL values are allowed.
static int procedureNullableUnknown
          Indicates that whether NULL values are allowed is unknown.
static int procedureResultUnknown
          A possible value for column PROCEDURE_TYPE in the ResultSet object returned by the method getProcedures.
static int procedureReturnsResult
          A possible value for column PROCEDURE_TYPE in the ResultSet object returned by the method getProcedures.
static short tableIndexClustered
          A possible value for column TYPE in the ResultSet object returned by the method getIndexInfo.
static short tableIndexHashed
          A possible value for column TYPE in the ResultSet object returned by the method getIndexInfo.
static short tableIndexOther
          A possible value for column TYPE in the ResultSet object returned by the method getIndexInfo.
static short tableIndexStatistic
          A possible value for column TYPE in the ResultSet object returned by the method getIndexInfo.
static int typeNoNulls
          A possible value for column NULLABLE in the ResultSet object returned by the method getTypeInfo.
static int typeNullable
          A possible value for column NULLABLE in the ResultSet object returned by the method getTypeInfo.
static int typeNullableUnknown
          A possible value for column NULLABLE in the ResultSet object returned by the method getTypeInfo.
static int typePredBasic
          A possible value for column SEARCHABLE in the ResultSet object returned by the method getTypeInfo.
static int typePredChar
          A possible value for column SEARCHABLE in the ResultSet object returned by the method getTypeInfo.
static int typePredNone
          A possible value for column SEARCHABLE in the ResultSet object returned by the method getTypeInfo.
static int typeSearchable
          A possible value for column SEARCHABLE in the ResultSet object returned by the method getTypeInfo.
static int versionColumnNotPseudo
          Indicates that this version column is NOT a pseudo column.
static int versionColumnPseudo
          Indicates that this version column is a pseudo column.
static int versionColumnUnknown
          Indicates that this version column may or may not be a pseudo column.
 
Method Summary
 boolean allProceduresAreCallable()
          Can all the procedures returned by getProcedures be called by the current user?
 boolean allTablesAreSelectable()
          Can all the tables returned by getTable be SELECTed by the current user?
 boolean dataDefinitionCausesTransactionCommit()
          Does a data definition statement within a transaction force the transaction to commit?
 boolean dataDefinitionIgnoredInTransactions()
          Is a data definition statement within a transaction ignored?
 boolean deletesAreDetected(int type)
          Indicates whether or not a visible row delete can be detected by calling ResultSet.rowDeleted().
 boolean doesMaxRowSizeIncludeBlobs()
          Did getMaxRowSize() include LONGVARCHAR and LONGVARBINARY blobs?
 ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable)
          Gets a description of a table's optimal set of columns that uniquely identifies a row.
 ResultSet getCatalogs()
          Gets the catalog names available in this database.
 String getCatalogSeparator()
          What's the separator between catalog and table name?
 String getCatalogTerm()
          What's the database vendor's preferred term for "catalog"?
 ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern)
          Gets a description of the access rights for a table's columns.
 ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern)
          Gets a description of table columns available in the specified catalog.
 Connection getConnection()
          Retrieves the connection that produced this metadata object.
 ResultSet getCrossReference(String primaryCatalog, String primarySchema, String primaryTable, String foreignCatalog, String foreignSchema, String foreignTable)
          Gets a description of the foreign key columns in the foreign key table that reference the primary key columns of the primary key table (describe how one table imports another's key.) This should normally return a single foreign key/primary key pair (most tables only import a foreign key from a table once.) They are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and KEY_SEQ.
 String getDatabaseProductName()
          What's the name of this database product?
 String getDatabaseProductVersion()
          What's the version of this database product?
 int getDefaultTransactionIsolation()
          What's the database's default transaction isolation level? The values are defined in java.sql.Connection.
 int getDriverMajorVersion()
          What's this JDBC driver's major version number?
 int getDriverMinorVersion()
          What's this JDBC driver's minor version number?
 String getDriverName()
          What's the name of this JDBC driver?
 String getDriverVersion()
          What's the version of this JDBC driver?
 ResultSet getExportedKeys(String catalog, String schema, String table)
          Gets a description of the foreign key columns that reference a table's primary key columns (the foreign keys exported by a table).
 String getExtraNameCharacters()
          Gets all the "extra" characters that can be used in unquoted identifier names (those beyond a-z, A-Z, 0-9 and _).
 String getIdentifierQuoteString()
          What's the string used to quote SQL identifiers? This returns a space " " if identifier quoting isn't supported.
 ResultSet getImportedKeys(String catalog, String schema, String table)
          Gets a description of the primary key columns that are referenced by a table's foreign key columns (the primary keys imported by a table).
 ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate)
          Gets a description of a table's indices and statistics.
 int getMaxBinaryLiteralLength()
          How many hex characters can you have in an inline binary literal?
 int getMaxCatalogNameLength()
          What's the maximum length of a catalog name?
 int getMaxCharLiteralLength()
          What's the max length for a character literal?
 int getMaxColumnNameLength()
          What's the limit on column name length?
 int getMaxColumnsInGroupBy()
          What's the maximum number of columns in a "GROUP BY" clause?
 int getMaxColumnsInIndex()
          What's the maximum number of columns allowed in an index?
 int getMaxColumnsInOrderBy()
          What's the maximum number of columns in an "ORDER BY" clause?
 int getMaxColumnsInSelect()
          What's the maximum number of columns in a "SELECT" list?
 int getMaxColumnsInTable()
          What's the maximum number of columns in a table?
 int getMaxConnections()
          How many active connections can we have at a time to this database?
 int getMaxCursorNameLength()
          What's the maximum cursor name length?
 int getMaxIndexLength()
          Retrieves the maximum number of bytes for an index, including all of the parts of the index.
 int getMaxProcedureNameLength()
          What's the maximum length of a procedure name?
 int getMaxRowSize()
          What's the maximum length of a single row?
 int getMaxSchemaNameLength()
          What's the maximum length allowed for a schema name?
 int getMaxStatementLength()
          What's the maximum length of an SQL statement?
 int getMaxStatements()
          How many active statements can we have open at one time to this database?
 int getMaxTableNameLength()
          What's the maximum length of a table name?
 int getMaxTablesInSelect()
          What's the maximum number of tables in a SELECT statement?
 int getMaxUserNameLength()
          What's the maximum length of a user name?
 String getNumericFunctions()
          Gets a comma-separated list of math functions.
 ResultSet getPrimaryKeys(String catalog, String schema, String table)
          Gets a description of a table's primary key columns.
 ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern)
          Gets a description of a catalog's stored procedure parameters and result columns.
 ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern)
          Gets a description of the stored procedures available in a catalog.
 String getProcedureTerm()
          What's the database vendor's preferred term for "procedure"?
 ResultSet getSchemas()
          Gets the schema names available in this database.
 String getSchemaTerm()
          What's the database vendor's preferred term for "schema"?
 String getSearchStringEscape()
          Gets the string that can be used to escape wildcard characters.
 String getSQLKeywords()
          Gets a comma-separated list of all a database's SQL keywords that are NOT also SQL92 keywords.
 String getStringFunctions()
          Gets a comma-separated list of string functions.
 String getSystemFunctions()
          Gets a comma-separated list of system functions.
 ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern)
          Gets a description of the access rights for each table available in a catalog.
 ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types)
          Gets a description of tables available in a catalog.
 ResultSet getTableTypes()
          Gets the table types available in this database.
 String getTimeDateFunctions()
          Gets a comma-separated list of time and date functions.
 ResultSet getTypeInfo()
          Gets a description of all the standard SQL types supported by this database.
 ResultSet getUDTs(String catalog, String schemaPattern, String typeNamePattern, int[] types)
          Gets a description of the user-defined types defined in a particular schema.
 String getURL()
          What's the url for this database?
 String getUserName()
          What's our user name as known to the database?
 ResultSet getVersionColumns(String catalog, String schema, String table)
          Gets a description of a table's columns that are automatically updated when any value in a row is updated.
 boolean insertsAreDetected(int type)
          Indicates whether or not a visible row insert can be detected by calling ResultSet.rowInserted().
 boolean isCatalogAtStart()
          Does a catalog appear at the start of a qualified table name? (Otherwise it appears at the end)
 boolean isReadOnly()
          Is the database in read-only mode?
 boolean nullPlusNonNullIsNull()
          Are concatenations between NULL and non-NULL values NULL? For SQL-92 compliance, a JDBC technology-enabled driver will return true.
 boolean nullsAreSortedAtEnd()
          Are NULL values sorted at the end regardless of sort order?
 boolean nullsAreSortedAtStart()
          Are NULL values sorted at the start regardless of sort order?
 boolean nullsAreSortedHigh()
          Are NULL values sorted high?
 boolean nullsAreSortedLow()
          Are NULL values sorted low?
 boolean othersDeletesAreVisible(int type)
          Indicates whether deletes made by others are visible.
 boolean othersInsertsAreVisible(int type)
          Indicates whether inserts made by others are visible.
 boolean othersUpdatesAreVisible(int type)
          Indicates whether updates made by others are visible.
 boolean ownDeletesAreVisible(int type)
          Indicates whether a result set's own deletes are visible.
 boolean ownInsertsAreVisible(int type)
          Indicates whether a result set's own inserts are visible.
 boolean ownUpdatesAreVisible(int type)
          Indicates whether a result set's own updates are visible.
 boolean storesLowerCaseIdentifiers()
          Does the database treat mixed case unquoted SQL identifiers as case insensitive and store them in lower case?
 boolean storesLowerCaseQuotedIdentifiers()
          Does the database treat mixed case quoted SQL identifiers as case insensitive and store them in lower case?
 boolean storesMixedCaseIdentifiers()
          Does the database treat mixed case unquoted SQL identifiers as case insensitive and store them in mixed case?
 boolean storesMixedCaseQuotedIdentifiers()
          Does the database treat mixed case quoted SQL identifiers as case insensitive and store them in mixed case?
 boolean storesUpperCaseIdentifiers()
          Does the database treat mixed case unquoted SQL identifiers as case insensitive and store them in upper case?
 boolean storesUpperCaseQuotedIdentifiers()
          Does the database treat mixed case quoted SQL identifiers as case insensitive and store them in upper case?
 boolean supportsAlterTableWithAddColumn()
          Is "ALTER TABLE" with add column supported?
 boolean supportsAlterTableWithDropColumn()
          Is "ALTER TABLE" with drop column supported?
 boolean supportsANSI92EntryLevelSQL()
          Is the ANSI92 entry level SQL grammar supported? All JDBC CompliantTM drivers must return true.
 boolean supportsANSI92FullSQL()
          Is the ANSI92 full SQL grammar supported?
 boolean supportsANSI92IntermediateSQL()
          Is the ANSI92 intermediate SQL grammar supported?
 boolean supportsBatchUpdates()
          Indicates whether the driver supports batch updates.
 boolean supportsCatalogsInDataManipulation()
          Can a catalog name be used in a data manipulation statement?
 boolean supportsCatalogsInIndexDefinitions()
          Can a catalog name be used in an index definition statement?
 boolean supportsCatalogsInPrivilegeDefinitions()
          Can a catalog name be used in a privilege definition statement?
 boolean supportsCatalogsInProcedureCalls()
          Can a catalog name be used in a procedure call statement?
 boolean supportsCatalogsInTableDefinitions()
          Can a catalog name be used in a table definition statement?
 boolean supportsColumnAliasing()
          Is column aliasing supported?
 boolean supportsConvert()
          Is the CONVERT function between SQL types supported?
 boolean supportsConvert(int fromType, int toType)
          Is CONVERT between the given SQL types supported?
 boolean supportsCoreSQLGrammar()
          Is the ODBC Core SQL grammar supported?
 boolean supportsCorrelatedSubqueries()
          Are correlated subqueries supported? A JDBC CompliantTM driver always returns true.
 boolean supportsDataDefinitionAndDataManipulationTransactions()
          Are both data definition and data manipulation statements within a transaction supported?
 boolean supportsDataManipulationTransactionsOnly()
          Are only data manipulation statements within a transaction supported?
 boolean supportsDifferentTableCorrelationNames()
          If table correlation names are supported, are they restricted to be different from the names of the tables?
 boolean supportsExpressionsInOrderBy()
          Are expressions in "ORDER BY" lists supported?
 boolean supportsExtendedSQLGrammar()
          Is the ODBC Extended SQL grammar supported?
 boolean supportsFullOuterJoins()
          Are full nested outer joins supported?
 boolean supportsGroupBy()
          Is some form of "GROUP BY" clause supported?
 boolean supportsGroupByBeyondSelect()
          Can a "GROUP BY" clause add columns not in the SELECT provided it specifies all the columns in the SELECT?
 boolean supportsGroupByUnrelated()
          Can a "GROUP BY" clause use columns not in the SELECT?
 boolean supportsIntegrityEnhancementFacility()
          Is the SQL Integrity Enhancement Facility supported?
 boolean supportsLikeEscapeClause()
          Is the escape character in "LIKE" clauses supported? A JDBC CompliantTM driver always returns true.
 boolean supportsLimitedOuterJoins()
          Is there limited support for outer joins? (This will be true if supportFullOuterJoins is true.)
 boolean supportsMinimumSQLGrammar()
          Is the ODBC Minimum SQL grammar supported? All JDBC CompliantTM drivers must return true.
 boolean supportsMixedCaseIdentifiers()
          Does the database treat mixed case unquoted SQL identifiers as case sensitive and as a result store them in mixed case? A JDBC CompliantTM driver will always return false.
 boolean supportsMixedCaseQuotedIdentifiers()
          Does the database treat mixed case quoted SQL identifiers as case sensitive and as a result store them in mixed case? A JDBC CompliantTM driver will always return true.
 boolean supportsMultipleResultSets()
          Are multiple ResultSet from a single execute supported?
 boolean supportsMultipleTransactions()
          Can we have multiple transactions open at once (on different connections)?
 boolean supportsNonNullableColumns()
          Can columns be defined as non-nullable? A JDBC CompliantTM driver always returns true.
 boolean supportsOpenCursorsAcrossCommit()
          Can cursors remain open across commits?
 boolean supportsOpenCursorsAcrossRollback()
          Can cursors remain open across rollbacks?
 boolean supportsOpenStatementsAcrossCommit()
          Can statements remain open across commits?
 boolean supportsOpenStatementsAcrossRollback()
          Can statements remain open across rollbacks?
 boolean supportsOrderByUnrelated()
          Can an "ORDER BY" clause use columns not in the SELECT statement?
 boolean supportsOuterJoins()
          Is some form of outer join supported?
 boolean supportsPositionedDelete()
          Is positioned DELETE supported?
 boolean supportsPositionedUpdate()
          Is positioned UPDATE supported?
 boolean supportsResultSetConcurrency(int type, int concurrency)
          Does the database support the concurrency type in combination with the given result set type?
 boolean supportsResultSetType(int type)
          Does the database support the given result set type?
 boolean supportsSchemasInDataManipulation()
          Can a schema name be used in a data manipulation statement?
 boolean supportsSchemasInIndexDefinitions()
          Can a schema name be used in an index definition statement?
 boolean supportsSchemasInPrivilegeDefinitions()
          Can a schema name be used in a privilege definition statement?
 boolean supportsSchemasInProcedureCalls()
          Can a schema name be used in a procedure call statement?
 boolean supportsSchemasInTableDefinitions()
          Can a schema name be used in a table definition statement?
 boolean supportsSelectForUpdate()
          Is SELECT for UPDATE supported?
 boolean supportsStoredProcedures()
          Are stored procedure calls using the stored procedure escape syntax supported?
 boolean supportsSubqueriesInComparisons()
          Are subqueries in comparison expressions supported? A JDBC CompliantTM driver always returns true.
 boolean supportsSubqueriesInExists()
          Are subqueries in 'exists' expressions supported? A JDBC CompliantTM driver always returns true.
 boolean supportsSubqueriesInIns()
          Are subqueries in 'in' statements supported? A JDBC CompliantTM driver always returns true.
 boolean supportsSubqueriesInQuantifieds()
          Are subqueries in quantified expressions supported? A JDBC CompliantTM driver always returns true.
 boolean supportsTableCorrelationNames()
          Are table correlation names supported? A JDBC CompliantTM driver always returns true.
 boolean supportsTransactionIsolationLevel(int level)
          Does this database support the given transaction isolation level?
 boolean supportsTransactions()
          Are transactions supported? If not, invoking the method commit is a noop and the isolation level is TRANSACTION_NONE.
 boolean supportsUnion()
          Is SQL UNION supported?
 boolean supportsUnionAll()
          Is SQL UNION ALL supported?
 boolean updatesAreDetected(int type)
          Indicates whether or not a visible row update can be detected by calling the method ResultSet.rowUpdated.
 boolean usesLocalFilePerTable()
          Does the database use a file for each table?
 boolean usesLocalFiles()
          Does the database store tables in a local file?
 

Field Detail

procedureResultUnknown

public static final int procedureResultUnknown
A possible value for column PROCEDURE_TYPE in the ResultSet object returned by the method getProcedures.

Indicates that it is not known whether the procedure returns a result.


procedureNoResult

public static final int procedureNoResult
A possible value for column PROCEDURE_TYPE in the ResultSet object returned by the method getProcedures.

Indicates that the procedure does not return a result.


procedureReturnsResult

public static final int procedureReturnsResult
A possible value for column PROCEDURE_TYPE in the ResultSet object returned by the method getProcedures.

Indicates that the procedure returns a result.


procedureColumnUnknown

public static final int procedureColumnUnknown
Indicates that type of the column is unknown. A possible value for the column COLUMN_TYPE in the ResultSet returned by the method getProcedureColumns.

procedureColumnIn

public static final int procedureColumnIn
Indicates that the column stores IN parameters. A possible value for the column COLUMN_TYPE in the ResultSet returned by the method getProcedureColumns.

procedureColumnInOut

public static final int procedureColumnInOut
Indicates that the column stores INOUT parameters. A possible value for the column COLUMN_TYPE in the ResultSet returned by the method getProcedureColumns.

procedureColumnOut

public static final int procedureColumnOut
Indicates that the column stores OUT parameters. A possible value for the column COLUMN_TYPE in the ResultSet returned by the method getProcedureColumns.

procedureColumnReturn

public static final int procedureColumnReturn
Indicates that the column stores return values. A possible value for the column COLUMN_TYPE in the ResultSet returned by the method getProcedureColumns.

procedureColumnResult

public static final int procedureColumnResult
Indicates that the column stores results. A possible value for the column COLUMN_TYPE in the ResultSet returned by the method getProcedureColumns.

procedureNoNulls

public static final int procedureNoNulls
Indicates that NULL values are not allowed. A possible value for the column NULLABLE in the ResultSet returned by the method getProcedureColumns.

procedureNullable

public static final int procedureNullable
Indicates that NULL values are allowed. A possible value for the column NULLABLE in the ResultSet returned by the method getProcedureColumns.

procedureNullableUnknown

public static final int procedureNullableUnknown
Indicates that whether NULL values are allowed is unknown. A possible value for the column NULLABLE in the ResultSet returned by the method getProcedureColumns.

columnNoNulls

public static final int columnNoNulls
Indicates that the column might not allow NULL values. A possible value for the column NULLABLE in the ResultSet returned by the method getColumns.

columnNullable

public static final int columnNullable
Indicates that the column definitely allows NULL values. A possible value for the column NULLABLE in the ResultSet returned by the method getColumns.

columnNullableUnknown

public static final int columnNullableUnknown
Indicates that the nullability of columns is unknown. A possible value for the column NULLABLE in the ResultSet returned by the method getColumns.

bestRowTemporary

public static final int bestRowTemporary
Indicates that the scope of the best row identifier is very temporary, lasting only while the row is being used. A possible value for the column SCOPE in the ResultSet object returned by the method getBestRowIdentifier.

bestRowTransaction

public static final int bestRowTransaction
Indicates that the scope of the best row identifier is the remainder of the current transaction. A possible value for the column SCOPE in the ResultSet object returned by the method getBestRowIdentifier.

bestRowSession

public static final int bestRowSession
Indicates that the scope of the best row identifier is the remainder of the current session. A possible value for the column SCOPE in the ResultSet object returned by the method getBestRowIdentifier.

bestRowUnknown

public static final int bestRowUnknown
Indicates that the best row identifier may or may not be a pseudo column. A possible value for the column PSEUDO_COLUMN in the ResultSet object returned by the method getBestRowIdentifier.

bestRowNotPseudo

public static final int bestRowNotPseudo
Indicates that the best row identifier is NOT a pseudo column. A possible value for the column PSEUDO_COLUMN in the ResultSet object returned by the method getBestRowIdentifier.

bestRowPseudo

public static final int bestRowPseudo
Indicates that the best row identifier is a pseudo column. A possible value for the column PSEUDO_COLUMN in the ResultSet object returned by the method getBestRowIdentifier.

versionColumnUnknown

public static final int versionColumnUnknown
Indicates that this version column may or may not be a pseudo column. A possible value for the column PSEUDO_COLUMN in the ResultSet object returned by the method getVersionColumns.

versionColumnNotPseudo

public static final int versionColumnNotPseudo
Indicates that this version column is NOT a pseudo column. A possible value for the column PSEUDO_COLUMN in the ResultSet object returned by the method getVersionColumns.

versionColumnPseudo

public static final int versionColumnPseudo
Indicates that this version column is a pseudo column. A possible value for the column PSEUDO_COLUMN in the ResultSet object returned by the method getVersionColumns.

importedKeyCascade

public static final int importedKeyCascade
A possible value for the columns UPDATE_RULE and DELETE_RULE in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.

For the column UPDATE_RULE, it indicates that when the primary key is updated, the foreign key (imported key) is changed to agree with it.

For the column DELETE_RULE, it indicates that when the primary key is deleted, rows that imported that key are deleted.


importedKeyRestrict

public static final int importedKeyRestrict
A possible value for the columns UPDATE_RULE and DELETE_RULE in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.

For the column UPDATE_RULE, it indicates that a primary key may not be updated if it has been imported by another table as a foreign key.

For the column DELETE_RULE, it indicates that a primary key may not be deleted if it has been imported by another table as a foreign key.


importedKeySetNull

public static final int importedKeySetNull
A possible value for the columns UPDATE_RULE and DELETE_RULE in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.

For the columns UPDATE_RULE and DELETE_RULE, it indicates that when the primary key is updated or deleted, the foreign key (imported key) is changed to NULL.


importedKeyNoAction

public static final int importedKeyNoAction
A possible value for the columns UPDATE_RULE and DELETE_RULE in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.

For the columns UPDATE_RULE and DELETE_RULE, it indicates that if the primary key has been imported, it cannot be updated or deleted.


importedKeySetDefault

public static final int importedKeySetDefault
A possible value for the columns UPDATE_RULE and DELETE_RULE in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.

For the columns UPDATE_RULE and DELETE_RULE, it indicates that if the primary key is updated or deleted, the foreign key (imported key) is set to the default value.


importedKeyInitiallyDeferred

public static final int importedKeyInitiallyDeferred
A possible value for the column DEFERRABILITY in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.

Indicates deferrability. See SQL-92 for a definition.


importedKeyInitiallyImmediate

public static final int importedKeyInitiallyImmediate
A possible value for the column DEFERRABILITY in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.

Indicates deferrability. See SQL-92 for a definition.


importedKeyNotDeferrable

public static final int importedKeyNotDeferrable
A possible value for the column DEFERRABILITY in the ResultSet objects returned by the methods getImportedKeys, getExportedKeys, and getCrossReference.

Indicates deferrability. See SQL-92 for a definition.


typeNoNulls

public static final int typeNoNulls
A possible value for column NULLABLE in the ResultSet object returned by the method getTypeInfo.

Indicates that a NULL value is NOT allowed for this data type.


typeNullable

public static final int typeNullable
A possible value for column NULLABLE in the ResultSet object returned by the method getTypeInfo.

Indicates that a NULL value is allowed for this data type.


typeNullableUnknown

public static final int typeNullableUnknown
A possible value for column NULLABLE in the ResultSet object returned by the method getTypeInfo.

Indicates that it is not known whether a NULL value is allowed for this data type.


typePredNone

public static final int typePredNone
A possible value for column SEARCHABLE in the ResultSet object returned by the method getTypeInfo.

Indicates that WHERE search clauses are not supported for this type.


typePredChar

public static final int typePredChar
A possible value for column SEARCHABLE in the ResultSet object returned by the method getTypeInfo.

Indicates that the only WHERE search clause that can be based on this type is WHERE . . .LIKE.


typePredBasic

public static final int typePredBasic
A possible value for column SEARCHABLE in the ResultSet object returned by the method getTypeInfo.

Indicates that one can base all WHERE search clauses except WHERE . . .LIKE on this data type.


typeSearchable

public static final int typeSearchable
A possible value for column SEARCHABLE in the ResultSet object returned by the method getTypeInfo.

Indicates that all WHERE search clauses can be based on this type.


tableIndexStatistic

public static final short tableIndexStatistic
A possible value for column TYPE in the ResultSet object returned by the method getIndexInfo.

Indicates that this column contains table statistics that are returned in conjunction with a table's index descriptions.


tableIndexClustered

public static final short tableIndexClustered
A possible value for column TYPE in the ResultSet object returned by the method getIndexInfo.

Indicates that this table index is a clustered index.


tableIndexHashed

public static final short tableIndexHashed
A possible value for column TYPE in the ResultSet object returned by the method getIndexInfo.

Indicates that this table index is a hashed index.


tableIndexOther

public static final short tableIndexOther
A possible value for column TYPE in the ResultSet object returned by the method getIndexInfo.

Indicates that this table index is not a clustered index, a hashed index, or table statistics; it is something other than these.

Method Detail

allProceduresAreCallable

public boolean allProceduresAreCallable()
                                 throws SQLException
Can all the procedures returned by getProcedures be called by the current user?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

allTablesAreSelectable

public boolean allTablesAreSelectable()
                               throws SQLException
Can all the tables returned by getTable be SELECTed by the current user?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

getURL

public String getURL()
              throws SQLException
What's the url for this database?
Returns:
the url or null if it cannot be generated
Throws:
SQLException - if a database access error occurs

getUserName

public String getUserName()
                   throws SQLException
What's our user name as known to the database?
Returns:
our database user name
Throws:
SQLException - if a database access error occurs

isReadOnly

public boolean isReadOnly()
                   throws SQLException
Is the database in read-only mode?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

nullsAreSortedHigh

public boolean nullsAreSortedHigh()
                           throws SQLException
Are NULL values sorted high?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

nullsAreSortedLow

public boolean nullsAreSortedLow()
                          throws SQLException
Are NULL values sorted low?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

nullsAreSortedAtStart

public boolean nullsAreSortedAtStart()
                              throws SQLException
Are NULL values sorted at the start regardless of sort order?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

nullsAreSortedAtEnd

public boolean nullsAreSortedAtEnd()
                            throws SQLException
Are NULL values sorted at the end regardless of sort order?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

getDatabaseProductName

public String getDatabaseProductName()
                              throws SQLException
What's the name of this database product?
Returns:
database product name
Throws:
SQLException - if a database access error occurs

getDatabaseProductVersion

public String getDatabaseProductVersion()
                                 throws SQLException
What's the version of this database product?
Returns:
database version
Throws:
SQLException - if a database access error occurs

getDriverName

public String getDriverName()
                     throws SQLException
What's the name of this JDBC driver?
Returns:
JDBC driver name
Throws:
SQLException - if a database access error occurs

getDriverVersion

public String getDriverVersion()
                        throws SQLException
What's the version of this JDBC driver?
Returns:
JDBC driver version
Throws:
SQLException - if a database access error occurs

getDriverMajorVersion

public int getDriverMajorVersion()
What's this JDBC driver's major version number?
Returns:
JDBC driver major version

getDriverMinorVersion

public int getDriverMinorVersion()
What's this JDBC driver's minor version number?
Returns:
JDBC driver minor version number

usesLocalFiles

public boolean usesLocalFiles()
                       throws SQLException
Does the database store tables in a local file?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

usesLocalFilePerTable

public boolean usesLocalFilePerTable()
                              throws SQLException
Does the database use a file for each table?
Returns:
true if the database uses a local file for each table
Throws:
SQLException - if a database access error occurs

supportsMixedCaseIdentifiers

public boolean supportsMixedCaseIdentifiers()
                                     throws SQLException
Does the database treat mixed case unquoted SQL identifiers as case sensitive and as a result store them in mixed case? A JDBC CompliantTM driver will always return false.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

storesUpperCaseIdentifiers

public boolean storesUpperCaseIdentifiers()
                                   throws SQLException
Does the database treat mixed case unquoted SQL identifiers as case insensitive and store them in upper case?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

storesLowerCaseIdentifiers

public boolean storesLowerCaseIdentifiers()
                                   throws SQLException
Does the database treat mixed case unquoted SQL identifiers as case insensitive and store them in lower case?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

storesMixedCaseIdentifiers

public boolean storesMixedCaseIdentifiers()
                                   throws SQLException
Does the database treat mixed case unquoted SQL identifiers as case insensitive and store them in mixed case?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsMixedCaseQuotedIdentifiers

public boolean supportsMixedCaseQuotedIdentifiers()
                                           throws SQLException
Does the database treat mixed case quoted SQL identifiers as case sensitive and as a result store them in mixed case? A JDBC CompliantTM driver will always return true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

storesUpperCaseQuotedIdentifiers

public boolean storesUpperCaseQuotedIdentifiers()
                                         throws SQLException
Does the database treat mixed case quoted SQL identifiers as case insensitive and store them in upper case?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

storesLowerCaseQuotedIdentifiers

public boolean storesLowerCaseQuotedIdentifiers()
                                         throws SQLException
Does the database treat mixed case quoted SQL identifiers as case insensitive and store them in lower case?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

storesMixedCaseQuotedIdentifiers

public boolean storesMixedCaseQuotedIdentifiers()
                                         throws SQLException
Does the database treat mixed case quoted SQL identifiers as case insensitive and store them in mixed case?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

getIdentifierQuoteString

public String getIdentifierQuoteString()
                                throws SQLException
What's the string used to quote SQL identifiers? This returns a space " " if identifier quoting isn't supported. A JDBC CompliantTM driver always uses a double quote character.
Returns:
the quoting string
Throws:
SQLException - if a database access error occurs

getSQLKeywords

public String getSQLKeywords()
                      throws SQLException
Gets a comma-separated list of all a database's SQL keywords that are NOT also SQL92 keywords.
Returns:
the list
Throws:
SQLException - if a database access error occurs

getNumericFunctions

public String getNumericFunctions()
                           throws SQLException
Gets a comma-separated list of math functions. These are the X/Open CLI math function names used in the JDBC function escape clause.
Returns:
the list
Throws:
SQLException - if a database access error occurs

getStringFunctions

public String getStringFunctions()
                          throws SQLException
Gets a comma-separated list of string functions. These are the X/Open CLI string function names used in the JDBC function escape clause.
Returns:
the list
Throws:
SQLException - if a database access error occurs

getSystemFunctions

public String getSystemFunctions()
                          throws SQLException
Gets a comma-separated list of system functions. These are the X/Open CLI system function names used in the JDBC function escape clause.
Returns:
the list
Throws:
SQLException - if a database access error occurs

getTimeDateFunctions

public String getTimeDateFunctions()
                            throws SQLException
Gets a comma-separated list of time and date functions.
Returns:
the list
Throws:
SQLException - if a database access error occurs

getSearchStringEscape

public String getSearchStringEscape()
                             throws SQLException
Gets the string that can be used to escape wildcard characters. This is the string that can be used to escape '_' or '%' in the string pattern style catalog search parameters.

The '_' character represents any single character.

The '%' character represents any sequence of zero or more characters.

Returns:
the string used to escape wildcard characters
Throws:
SQLException - if a database access error occurs

getExtraNameCharacters

public String getExtraNameCharacters()
                              throws SQLException
Gets all the "extra" characters that can be used in unquoted identifier names (those beyond a-z, A-Z, 0-9 and _).
Returns:
the string containing the extra characters
Throws:
SQLException - if a database access error occurs

supportsAlterTableWithAddColumn

public boolean supportsAlterTableWithAddColumn()
                                        throws SQLException
Is "ALTER TABLE" with add column supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsAlterTableWithDropColumn

public boolean supportsAlterTableWithDropColumn()
                                         throws SQLException
Is "ALTER TABLE" with drop column supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsColumnAliasing

public boolean supportsColumnAliasing()
                               throws SQLException
Is column aliasing supported?

If so, the SQL AS clause can be used to provide names for computed columns or to provide alias names for columns as required. A JDBC CompliantTM driver always returns true.

Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

nullPlusNonNullIsNull

public boolean nullPlusNonNullIsNull()
                              throws SQLException
Are concatenations between NULL and non-NULL values NULL? For SQL-92 compliance, a JDBC technology-enabled driver will return true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsConvert

public boolean supportsConvert()
                        throws SQLException
Is the CONVERT function between SQL types supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsConvert

public boolean supportsConvert(int fromType,
                               int toType)
                        throws SQLException
Is CONVERT between the given SQL types supported?
Parameters:
fromType - the type to convert from
toType - the type to convert to
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs
See Also:
Types

supportsTableCorrelationNames

public boolean supportsTableCorrelationNames()
                                      throws SQLException
Are table correlation names supported? A JDBC CompliantTM driver always returns true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsDifferentTableCorrelationNames

public boolean supportsDifferentTableCorrelationNames()
                                               throws SQLException
If table correlation names are supported, are they restricted to be different from the names of the tables?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsExpressionsInOrderBy

public boolean supportsExpressionsInOrderBy()
                                     throws SQLException
Are expressions in "ORDER BY" lists supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsOrderByUnrelated

public boolean supportsOrderByUnrelated()
                                 throws SQLException
Can an "ORDER BY" clause use columns not in the SELECT statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsGroupBy

public boolean supportsGroupBy()
                        throws SQLException
Is some form of "GROUP BY" clause supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsGroupByUnrelated

public boolean supportsGroupByUnrelated()
                                 throws SQLException
Can a "GROUP BY" clause use columns not in the SELECT?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsGroupByBeyondSelect

public boolean supportsGroupByBeyondSelect()
                                    throws SQLException
Can a "GROUP BY" clause add columns not in the SELECT provided it specifies all the columns in the SELECT?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsLikeEscapeClause

public boolean supportsLikeEscapeClause()
                                 throws SQLException
Is the escape character in "LIKE" clauses supported? A JDBC CompliantTM driver always returns true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsMultipleResultSets

public boolean supportsMultipleResultSets()
                                   throws SQLException
Are multiple ResultSet from a single execute supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsMultipleTransactions

public boolean supportsMultipleTransactions()
                                     throws SQLException
Can we have multiple transactions open at once (on different connections)?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsNonNullableColumns

public boolean supportsNonNullableColumns()
                                   throws SQLException
Can columns be defined as non-nullable? A JDBC CompliantTM driver always returns true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsMinimumSQLGrammar

public boolean supportsMinimumSQLGrammar()
                                  throws SQLException
Is the ODBC Minimum SQL grammar supported? All JDBC CompliantTM drivers must return true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsCoreSQLGrammar

public boolean supportsCoreSQLGrammar()
                               throws SQLException
Is the ODBC Core SQL grammar supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsExtendedSQLGrammar

public boolean supportsExtendedSQLGrammar()
                                   throws SQLException
Is the ODBC Extended SQL grammar supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsANSI92EntryLevelSQL

public boolean supportsANSI92EntryLevelSQL()
                                    throws SQLException
Is the ANSI92 entry level SQL grammar supported? All JDBC CompliantTM drivers must return true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsANSI92IntermediateSQL

public boolean supportsANSI92IntermediateSQL()
                                      throws SQLException
Is the ANSI92 intermediate SQL grammar supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsANSI92FullSQL

public boolean supportsANSI92FullSQL()
                              throws SQLException
Is the ANSI92 full SQL grammar supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsIntegrityEnhancementFacility

public boolean supportsIntegrityEnhancementFacility()
                                             throws SQLException
Is the SQL Integrity Enhancement Facility supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsOuterJoins

public boolean supportsOuterJoins()
                           throws SQLException
Is some form of outer join supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsFullOuterJoins

public boolean supportsFullOuterJoins()
                               throws SQLException
Are full nested outer joins supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsLimitedOuterJoins

public boolean supportsLimitedOuterJoins()
                                  throws SQLException
Is there limited support for outer joins? (This will be true if supportFullOuterJoins is true.)
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

getSchemaTerm

public String getSchemaTerm()
                     throws SQLException
What's the database vendor's preferred term for "schema"?
Returns:
the vendor term
Throws:
SQLException - if a database access error occurs

getProcedureTerm

public String getProcedureTerm()
                        throws SQLException
What's the database vendor's preferred term for "procedure"?
Returns:
the vendor term
Throws:
SQLException - if a database access error occurs

getCatalogTerm

public String getCatalogTerm()
                      throws SQLException
What's the database vendor's preferred term for "catalog"?
Returns:
the vendor term
Throws:
SQLException - if a database access error occurs

isCatalogAtStart

public boolean isCatalogAtStart()
                         throws SQLException
Does a catalog appear at the start of a qualified table name? (Otherwise it appears at the end)
Returns:
true if it appears at the start
Throws:
SQLException - if a database access error occurs

getCatalogSeparator

public String getCatalogSeparator()
                           throws SQLException
What's the separator between catalog and table name?
Returns:
the separator string
Throws:
SQLException - if a database access error occurs

supportsSchemasInDataManipulation

public boolean supportsSchemasInDataManipulation()
                                          throws SQLException
Can a schema name be used in a data manipulation statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsSchemasInProcedureCalls

public boolean supportsSchemasInProcedureCalls()
                                        throws SQLException
Can a schema name be used in a procedure call statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsSchemasInTableDefinitions

public boolean supportsSchemasInTableDefinitions()
                                          throws SQLException
Can a schema name be used in a table definition statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsSchemasInIndexDefinitions

public boolean supportsSchemasInIndexDefinitions()
                                          throws SQLException
Can a schema name be used in an index definition statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsSchemasInPrivilegeDefinitions

public boolean supportsSchemasInPrivilegeDefinitions()
                                              throws SQLException
Can a schema name be used in a privilege definition statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsCatalogsInDataManipulation

public boolean supportsCatalogsInDataManipulation()
                                           throws SQLException
Can a catalog name be used in a data manipulation statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsCatalogsInProcedureCalls

public boolean supportsCatalogsInProcedureCalls()
                                         throws SQLException
Can a catalog name be used in a procedure call statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsCatalogsInTableDefinitions

public boolean supportsCatalogsInTableDefinitions()
                                           throws SQLException
Can a catalog name be used in a table definition statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsCatalogsInIndexDefinitions

public boolean supportsCatalogsInIndexDefinitions()
                                           throws SQLException
Can a catalog name be used in an index definition statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsCatalogsInPrivilegeDefinitions

public boolean supportsCatalogsInPrivilegeDefinitions()
                                               throws SQLException
Can a catalog name be used in a privilege definition statement?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsPositionedDelete

public boolean supportsPositionedDelete()
                                 throws SQLException
Is positioned DELETE supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsPositionedUpdate

public boolean supportsPositionedUpdate()
                                 throws SQLException
Is positioned UPDATE supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsSelectForUpdate

public boolean supportsSelectForUpdate()
                                throws SQLException
Is SELECT for UPDATE supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsStoredProcedures

public boolean supportsStoredProcedures()
                                 throws SQLException
Are stored procedure calls using the stored procedure escape syntax supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsSubqueriesInComparisons

public boolean supportsSubqueriesInComparisons()
                                        throws SQLException
Are subqueries in comparison expressions supported? A JDBC CompliantTM driver always returns true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsSubqueriesInExists

public boolean supportsSubqueriesInExists()
                                   throws SQLException
Are subqueries in 'exists' expressions supported? A JDBC CompliantTM driver always returns true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsSubqueriesInIns

public boolean supportsSubqueriesInIns()
                                throws SQLException
Are subqueries in 'in' statements supported? A JDBC CompliantTM driver always returns true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsSubqueriesInQuantifieds

public boolean supportsSubqueriesInQuantifieds()
                                        throws SQLException
Are subqueries in quantified expressions supported? A JDBC CompliantTM driver always returns true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsCorrelatedSubqueries

public boolean supportsCorrelatedSubqueries()
                                     throws SQLException
Are correlated subqueries supported? A JDBC CompliantTM driver always returns true.
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsUnion

public boolean supportsUnion()
                      throws SQLException
Is SQL UNION supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsUnionAll

public boolean supportsUnionAll()
                         throws SQLException
Is SQL UNION ALL supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsOpenCursorsAcrossCommit

public boolean supportsOpenCursorsAcrossCommit()
                                        throws SQLException
Can cursors remain open across commits?
Returns:
true if cursors always remain open; false if they might not remain open
Throws:
SQLException - if a database access error occurs

supportsOpenCursorsAcrossRollback

public boolean supportsOpenCursorsAcrossRollback()
                                          throws SQLException
Can cursors remain open across rollbacks?
Returns:
true if cursors always remain open; false if they might not remain open
Throws:
SQLException - if a database access error occurs

supportsOpenStatementsAcrossCommit

public boolean supportsOpenStatementsAcrossCommit()
                                           throws SQLException
Can statements remain open across commits?
Returns:
true if statements always remain open; false if they might not remain open
Throws:
SQLException - if a database access error occurs

supportsOpenStatementsAcrossRollback

public boolean supportsOpenStatementsAcrossRollback()
                                             throws SQLException
Can statements remain open across rollbacks?
Returns:
true if statements always remain open; false if they might not remain open
Throws:
SQLException - if a database access error occurs

getMaxBinaryLiteralLength

public int getMaxBinaryLiteralLength()
                              throws SQLException
How many hex characters can you have in an inline binary literal?
Returns:
max binary literal length in hex characters; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxCharLiteralLength

public int getMaxCharLiteralLength()
                            throws SQLException
What's the max length for a character literal?
Returns:
max literal length; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxColumnNameLength

public int getMaxColumnNameLength()
                           throws SQLException
What's the limit on column name length?
Returns:
max column name length; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxColumnsInGroupBy

public int getMaxColumnsInGroupBy()
                           throws SQLException
What's the maximum number of columns in a "GROUP BY" clause?
Returns:
max number of columns; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxColumnsInIndex

public int getMaxColumnsInIndex()
                         throws SQLException
What's the maximum number of columns allowed in an index?
Returns:
max number of columns; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxColumnsInOrderBy

public int getMaxColumnsInOrderBy()
                           throws SQLException
What's the maximum number of columns in an "ORDER BY" clause?
Returns:
max number of columns; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxColumnsInSelect

public int getMaxColumnsInSelect()
                          throws SQLException
What's the maximum number of columns in a "SELECT" list?
Returns:
max number of columns; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxColumnsInTable

public int getMaxColumnsInTable()
                         throws SQLException
What's the maximum number of columns in a table?
Returns:
max number of columns; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxConnections

public int getMaxConnections()
                      throws SQLException
How many active connections can we have at a time to this database?
Returns:
max number of active connections; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxCursorNameLength

public int getMaxCursorNameLength()
                           throws SQLException
What's the maximum cursor name length?
Returns:
max cursor name length in bytes; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxIndexLength

public int getMaxIndexLength()
                      throws SQLException
Retrieves the maximum number of bytes for an index, including all of the parts of the index.
Returns:
max index length in bytes, which includes the composite of all the constituent parts of the index; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxSchemaNameLength

public int getMaxSchemaNameLength()
                           throws SQLException
What's the maximum length allowed for a schema name?
Returns:
max name length in bytes; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxProcedureNameLength

public int getMaxProcedureNameLength()
                              throws SQLException
What's the maximum length of a procedure name?
Returns:
max name length in bytes; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxCatalogNameLength

public int getMaxCatalogNameLength()
                            throws SQLException
What's the maximum length of a catalog name?
Returns:
max name length in bytes; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxRowSize

public int getMaxRowSize()
                  throws SQLException
What's the maximum length of a single row?
Returns:
max row size in bytes; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

doesMaxRowSizeIncludeBlobs

public boolean doesMaxRowSizeIncludeBlobs()
                                   throws SQLException
Did getMaxRowSize() include LONGVARCHAR and LONGVARBINARY blobs?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

getMaxStatementLength

public int getMaxStatementLength()
                          throws SQLException
What's the maximum length of an SQL statement?
Returns:
max length in bytes; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxStatements

public int getMaxStatements()
                     throws SQLException
How many active statements can we have open at one time to this database?
Returns:
the maximum number of statements that can be open at one time; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxTableNameLength

public int getMaxTableNameLength()
                          throws SQLException
What's the maximum length of a table name?
Returns:
max name length in bytes; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxTablesInSelect

public int getMaxTablesInSelect()
                         throws SQLException
What's the maximum number of tables in a SELECT statement?
Returns:
the maximum number of tables allowed in a SELECT statement; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getMaxUserNameLength

public int getMaxUserNameLength()
                         throws SQLException
What's the maximum length of a user name?
Returns:
max user name length in bytes; a result of zero means that there is no limit or the limit is not known
Throws:
SQLException - if a database access error occurs

getDefaultTransactionIsolation

public int getDefaultTransactionIsolation()
                                   throws SQLException
What's the database's default transaction isolation level? The values are defined in java.sql.Connection.
Returns:
the default isolation level
Throws:
SQLException - if a database access error occurs
See Also:
Connection

supportsTransactions

public boolean supportsTransactions()
                             throws SQLException
Are transactions supported? If not, invoking the method commit is a noop and the isolation level is TRANSACTION_NONE.
Returns:
true if transactions are supported; false otherwise
Throws:
SQLException - if a database access error occurs

supportsTransactionIsolationLevel

public boolean supportsTransactionIsolationLevel(int level)
                                          throws SQLException
Does this database support the given transaction isolation level?
Parameters:
level - the values are defined in java.sql.Connection
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs
See Also:
Connection

supportsDataDefinitionAndDataManipulationTransactions

public boolean supportsDataDefinitionAndDataManipulationTransactions()
                                                              throws SQLException
Are both data definition and data manipulation statements within a transaction supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

supportsDataManipulationTransactionsOnly

public boolean supportsDataManipulationTransactionsOnly()
                                                 throws SQLException
Are only data manipulation statements within a transaction supported?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

dataDefinitionCausesTransactionCommit

public boolean dataDefinitionCausesTransactionCommit()
                                              throws SQLException
Does a data definition statement within a transaction force the transaction to commit?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

dataDefinitionIgnoredInTransactions

public boolean dataDefinitionIgnoredInTransactions()
                                            throws SQLException
Is a data definition statement within a transaction ignored?
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs

getProcedures

public ResultSet getProcedures(String catalog,
                               String schemaPattern,
                               String procedureNamePattern)
                        throws SQLException
Gets a description of the stored procedures available in a catalog.

Only procedure descriptions matching the schema and procedure name criteria are returned. They are ordered by PROCEDURE_SCHEM, and PROCEDURE_NAME.

Each procedure description has the the following columns:

  1. PROCEDURE_CAT String => procedure catalog (may be null)
  2. PROCEDURE_SCHEM String => procedure schema (may be null)
  3. PROCEDURE_NAME String => procedure name
  4. reserved for future use
  5. reserved for future use
  6. reserved for future use
  7. REMARKS String => explanatory comment on the procedure
  8. PROCEDURE_TYPE short => kind of procedure:
    • procedureResultUnknown - May return a result
    • procedureNoResult - Does not return a result
    • procedureReturnsResult - Returns a result
Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schemaPattern - a schema name pattern; "" retrieves those without a schema
procedureNamePattern - a procedure name pattern
Returns:
ResultSet - each row is a procedure description
Throws:
SQLException - if a database access error occurs
See Also:
getSearchStringEscape()

getProcedureColumns

public ResultSet getProcedureColumns(String catalog,
                                     String schemaPattern,
                                     String procedureNamePattern,
                                     String columnNamePattern)
                              throws SQLException
Gets a description of a catalog's stored procedure parameters and result columns.

Only descriptions matching the schema, procedure and parameter name criteria are returned. They are ordered by PROCEDURE_SCHEM and PROCEDURE_NAME. Within this, the return value, if any, is first. Next are the parameter descriptions in call order. The column descriptions follow in column number order.

Each row in the ResultSet is a parameter description or column description with the following fields:

  1. PROCEDURE_CAT String => procedure catalog (may be null)
  2. PROCEDURE_SCHEM String => procedure schema (may be null)
  3. PROCEDURE_NAME String => procedure name
  4. COLUMN_NAME String => column/parameter name
  5. COLUMN_TYPE Short => kind of column/parameter:
    • procedureColumnUnknown - nobody knows
    • procedureColumnIn - IN parameter
    • procedureColumnInOut - INOUT parameter
    • procedureColumnOut - OUT parameter
    • procedureColumnReturn - procedure return value
    • procedureColumnResult - result column in ResultSet
  6. DATA_TYPE short => SQL type from java.sql.Types
  7. TYPE_NAME String => SQL type name, for a UDT type the type name is fully qualified
  8. PRECISION int => precision
  9. LENGTH int => length in bytes of data
  10. SCALE short => scale
  11. RADIX short => radix
  12. NULLABLE short => can it contain NULL?
    • procedureNoNulls - does not allow NULL values
    • procedureNullable - allows NULL values
    • procedureNullableUnknown - nullability unknown
  13. REMARKS String => comment describing parameter/column

Note: Some databases may not return the column descriptions for a procedure. Additional columns beyond REMARKS can be defined by the database.

Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schemaPattern - a schema name pattern; "" retrieves those without a schema
procedureNamePattern - a procedure name pattern
columnNamePattern - a column name pattern
Returns:
ResultSet - each row describes a stored procedure parameter or column
Throws:
SQLException - if a database access error occurs
See Also:
getSearchStringEscape()

getTables

public ResultSet getTables(String catalog,
                           String schemaPattern,
                           String tableNamePattern,
                           String[] types)
                    throws SQLException
Gets a description of tables available in a catalog.

Only table descriptions matching the catalog, schema, table name and type criteria are returned. They are ordered by TABLE_TYPE, TABLE_SCHEM and TABLE_NAME.

Each table description has the following columns:

  1. TABLE_CAT String => table catalog (may be null)
  2. TABLE_SCHEM String => table schema (may be null)
  3. TABLE_NAME String => table name
  4. TABLE_TYPE String => table type. Typical types are "TABLE", "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY", "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
  5. REMARKS String => explanatory comment on the table

Note: Some databases may not return information for all tables.

Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schemaPattern - a schema name pattern; "" retrieves those without a schema
tableNamePattern - a table name pattern
types - a list of table types to include; null returns all types
Returns:
ResultSet - each row is a table description
Throws:
SQLException - if a database access error occurs
See Also:
getSearchStringEscape()

getSchemas

public ResultSet getSchemas()
                     throws SQLException
Gets the schema names available in this database. The results are ordered by schema name.

The schema column is:

  1. TABLE_SCHEM String => schema name
Returns:
ResultSet - each row has a single String column that is a schema name
Throws:
SQLException - if a database access error occurs

getCatalogs

public ResultSet getCatalogs()
                      throws SQLException
Gets the catalog names available in this database. The results are ordered by catalog name.

The catalog column is:

  1. TABLE_CAT String => catalog name
Returns:
ResultSet - each row has a single String column that is a catalog name
Throws:
SQLException - if a database access error occurs

getTableTypes

public ResultSet getTableTypes()
                        throws SQLException
Gets the table types available in this database. The results are ordered by table type.

The table type is:

  1. TABLE_TYPE String => table type. Typical types are "TABLE", "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY", "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
Returns:
ResultSet - each row has a single String column that is a table type
Throws:
SQLException - if a database access error occurs

getColumns

public ResultSet getColumns(String catalog,
                            String schemaPattern,
                            String tableNamePattern,
                            String columnNamePattern)
                     throws SQLException
Gets a description of table columns available in the specified catalog.

Only column descriptions matching the catalog, schema, table and column name criteria are returned. They are ordered by TABLE_SCHEM, TABLE_NAME and ORDINAL_POSITION.

Each column description has the following columns:

  1. TABLE_CAT String => table catalog (may be null)
  2. TABLE_SCHEM String => table schema (may be null)
  3. TABLE_NAME String => table name
  4. COLUMN_NAME String => column name
  5. DATA_TYPE short => SQL type from java.sql.Types
  6. TYPE_NAME String => Data source dependent type name, for a UDT the type name is fully qualified
  7. COLUMN_SIZE int => column size. For char or date types this is the maximum number of characters, for numeric or decimal types this is precision.
  8. BUFFER_LENGTH is not used.
  9. DECIMAL_DIGITS int => the number of fractional digits
  10. NUM_PREC_RADIX int => Radix (typically either 10 or 2)
  11. NULLABLE int => is NULL allowed?
    • columnNoNulls - might not allow NULL values
    • columnNullable - definitely allows NULL values
    • columnNullableUnknown - nullability unknown
  12. REMARKS String => comment describing column (may be null)
  13. COLUMN_DEF String => default value (may be null)
  14. SQL_DATA_TYPE int => unused
  15. SQL_DATETIME_SUB int => unused
  16. CHAR_OCTET_LENGTH int => for char types the maximum number of bytes in the column
  17. ORDINAL_POSITION int => index of column in table (starting at 1)
  18. IS_NULLABLE String => "NO" means column definitely does not allow NULL values; "YES" means the column might allow NULL values. An empty string means nobody knows.
Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schemaPattern - a schema name pattern; "" retrieves those without a schema
tableNamePattern - a table name pattern
columnNamePattern - a column name pattern
Returns:
ResultSet - each row is a column description
Throws:
SQLException - if a database access error occurs
See Also:
getSearchStringEscape()

getColumnPrivileges

public ResultSet getColumnPrivileges(String catalog,
                                     String schema,
                                     String table,
                                     String columnNamePattern)
                              throws SQLException
Gets a description of the access rights for a table's columns.

Only privileges matching the column name criteria are returned. They are ordered by COLUMN_NAME and PRIVILEGE.

Each privilige description has the following columns:

  1. TABLE_CAT String => table catalog (may be null)
  2. TABLE_SCHEM String => table schema (may be null)
  3. TABLE_NAME String => table name
  4. COLUMN_NAME String => column name
  5. GRANTOR => grantor of access (may be null)
  6. GRANTEE String => grantee of access
  7. PRIVILEGE String => name of access (SELECT, INSERT, UPDATE, REFRENCES, ...)
  8. IS_GRANTABLE String => "YES" if grantee is permitted to grant to others; "NO" if not; null if unknown
Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schema - a schema name; "" retrieves those without a schema
table - a table name
columnNamePattern - a column name pattern
Returns:
ResultSet - each row is a column privilege description
Throws:
SQLException - if a database access error occurs
See Also:
getSearchStringEscape()

getTablePrivileges

public ResultSet getTablePrivileges(String catalog,
                                    String schemaPattern,
                                    String tableNamePattern)
                             throws SQLException
Gets a description of the access rights for each table available in a catalog. Note that a table privilege applies to one or more columns in the table. It would be wrong to assume that this priviledge applies to all columns (this may be true for some systems but is not true for all.)

Only privileges matching the schema and table name criteria are returned. They are ordered by TABLE_SCHEM, TABLE_NAME, and PRIVILEGE.

Each privilige description has the following columns:

  1. TABLE_CAT String => table catalog (may be null)
  2. TABLE_SCHEM String => table schema (may be null)
  3. TABLE_NAME String => table name
  4. GRANTOR => grantor of access (may be null)
  5. GRANTEE String => grantee of access
  6. PRIVILEGE String => name of access (SELECT, INSERT, UPDATE, REFRENCES, ...)
  7. IS_GRANTABLE String => "YES" if grantee is permitted to grant to others; "NO" if not; null if unknown
Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schemaPattern - a schema name pattern; "" retrieves those without a schema
tableNamePattern - a table name pattern
Returns:
ResultSet - each row is a table privilege description
Throws:
SQLException - if a database access error occurs
See Also:
getSearchStringEscape()

getBestRowIdentifier

public ResultSet getBestRowIdentifier(String catalog,
                                      String schema,
                                      String table,
                                      int scope,
                                      boolean nullable)
                               throws SQLException
Gets a description of a table's optimal set of columns that uniquely identifies a row. They are ordered by SCOPE.

Each column description has the following columns:

  1. SCOPE short => actual scope of result
    • bestRowTemporary - very temporary, while using row
    • bestRowTransaction - valid for remainder of current transaction
    • bestRowSession - valid for remainder of current session
  2. COLUMN_NAME String => column name
  3. DATA_TYPE short => SQL data type from java.sql.Types
  4. TYPE_NAME String => Data source dependent type name, for a UDT the type name is fully qualified
  5. COLUMN_SIZE int => precision
  6. BUFFER_LENGTH int => not used
  7. DECIMAL_DIGITS short => scale
  8. PSEUDO_COLUMN short => is this a pseudo column like an Oracle ROWID
    • bestRowUnknown - may or may not be pseudo column
    • bestRowNotPseudo - is NOT a pseudo column
    • bestRowPseudo - is a pseudo column
Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schema - a schema name; "" retrieves those without a schema
table - a table name
scope - the scope of interest; use same values as SCOPE
nullable - include columns that are nullable?
Returns:
ResultSet - each row is a column description
Throws:
SQLException - if a database access error occurs

getVersionColumns

public ResultSet getVersionColumns(String catalog,
                                   String schema,
                                   String table)
                            throws SQLException
Gets a description of a table's columns that are automatically updated when any value in a row is updated. They are unordered.

Each column description has the following columns:

  1. SCOPE short => is not used
  2. COLUMN_NAME String => column name
  3. DATA_TYPE short => SQL data type from java.sql.Types
  4. TYPE_NAME String => Data source dependent type name
  5. COLUMN_SIZE int => precision
  6. BUFFER_LENGTH int => length of column value in bytes
  7. DECIMAL_DIGITS short => scale
  8. PSEUDO_COLUMN short => is this a pseudo column like an Oracle ROWID
    • versionColumnUnknown - may or may not be pseudo column
    • versionColumnNotPseudo - is NOT a pseudo column
    • versionColumnPseudo - is a pseudo column
Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schema - a schema name; "" retrieves those without a schema
table - a table name
Returns:
ResultSet - each row is a column description
Throws:
SQLException - if a database access error occurs

getPrimaryKeys

public ResultSet getPrimaryKeys(String catalog,
                                String schema,
                                String table)
                         throws SQLException
Gets a description of a table's primary key columns. They are ordered by COLUMN_NAME.

Each primary key column description has the following columns:

  1. TABLE_CAT String => table catalog (may be null)
  2. TABLE_SCHEM String => table schema (may be null)
  3. TABLE_NAME String => table name
  4. COLUMN_NAME String => column name
  5. KEY_SEQ short => sequence number within primary key
  6. PK_NAME String => primary key name (may be null)
Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schema - a schema name; "" retrieves those without a schema
table - a table name
Returns:
ResultSet - each row is a primary key column description
Throws:
SQLException - if a database access error occurs

getImportedKeys

public ResultSet getImportedKeys(String catalog,
                                 String schema,
                                 String table)
                          throws SQLException
Gets a description of the primary key columns that are referenced by a table's foreign key columns (the primary keys imported by a table). They are ordered by PKTABLE_CAT, PKTABLE_SCHEM, PKTABLE_NAME, and KEY_SEQ.

Each primary key column description has the following columns:

  1. PKTABLE_CAT String => primary key table catalog being imported (may be null)
  2. PKTABLE_SCHEM String => primary key table schema being imported (may be null)
  3. PKTABLE_NAME String => primary key table name being imported
  4. PKCOLUMN_NAME String => primary key column name being imported
  5. FKTABLE_CAT String => foreign key table catalog (may be null)
  6. FKTABLE_SCHEM String => foreign key table schema (may be null)
  7. FKTABLE_NAME String => foreign key table name
  8. FKCOLUMN_NAME String => foreign key column name
  9. KEY_SEQ short => sequence number within foreign key
  10. UPDATE_RULE short => What happens to foreign key when primary is updated:
    • importedNoAction - do not allow update of primary key if it has been imported
    • importedKeyCascade - change imported key to agree with primary key update
    • importedKeySetNull - change imported key to NULL if its primary key has been updated
    • importedKeySetDefault - change imported key to default values if its primary key has been updated
    • importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
  11. DELETE_RULE short => What happens to the foreign key when primary is deleted.
    • importedKeyNoAction - do not allow delete of primary key if it has been imported
    • importedKeyCascade - delete rows that import a deleted key
    • importedKeySetNull - change imported key to NULL if its primary key has been deleted
    • importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
    • importedKeySetDefault - change imported key to default if its primary key has been deleted
  12. FK_NAME String => foreign key name (may be null)
  13. PK_NAME String => primary key name (may be null)
  14. DEFERRABILITY short => can the evaluation of foreign key constraints be deferred until commit
    • importedKeyInitiallyDeferred - see SQL92 for definition
    • importedKeyInitiallyImmediate - see SQL92 for definition
    • importedKeyNotDeferrable - see SQL92 for definition
Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schema - a schema name; "" retrieves those without a schema
table - a table name
Returns:
ResultSet - each row is a primary key column description
Throws:
SQLException - if a database access error occurs
See Also:
getExportedKeys(java.lang.String, java.lang.String, java.lang.String)

getExportedKeys

public ResultSet getExportedKeys(String catalog,
                                 String schema,
                                 String table)
                          throws SQLException
Gets a description of the foreign key columns that reference a table's primary key columns (the foreign keys exported by a table). They are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and KEY_SEQ.

Each foreign key column description has the following columns:

  1. PKTABLE_CAT String => primary key table catalog (may be null)
  2. PKTABLE_SCHEM String => primary key table schema (may be null)
  3. PKTABLE_NAME String => primary key table name
  4. PKCOLUMN_NAME String => primary key column name
  5. FKTABLE_CAT String => foreign key table catalog (may be null) being exported (may be null)
  6. FKTABLE_SCHEM String => foreign key table schema (may be null) being exported (may be null)
  7. FKTABLE_NAME String => foreign key table name being exported
  8. FKCOLUMN_NAME String => foreign key column name being exported
  9. KEY_SEQ short => sequence number within foreign key
  10. UPDATE_RULE short => What happens to foreign key when primary is updated:
    • importedNoAction - do not allow update of primary key if it has been imported
    • importedKeyCascade - change imported key to agree with primary key update
    • importedKeySetNull - change imported key to NULL if its primary key has been updated
    • importedKeySetDefault - change imported key to default values if its primary key has been updated
    • importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
  11. DELETE_RULE short => What happens to the foreign key when primary is deleted.
    • importedKeyNoAction - do not allow delete of primary key if it has been imported
    • importedKeyCascade - delete rows that import a deleted key
    • importedKeySetNull - change imported key to NULL if its primary key has been deleted
    • importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
    • importedKeySetDefault - change imported key to default if its primary key has been deleted
  12. FK_NAME String => foreign key name (may be null)
  13. PK_NAME String => primary key name (may be null)
  14. DEFERRABILITY short => can the evaluation of foreign key constraints be deferred until commit
    • importedKeyInitiallyDeferred - see SQL92 for definition
    • importedKeyInitiallyImmediate - see SQL92 for definition
    • importedKeyNotDeferrable - see SQL92 for definition
Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schema - a schema name; "" retrieves those without a schema
table - a table name
Returns:
ResultSet - each row is a foreign key column description
Throws:
SQLException - if a database access error occurs
See Also:
getImportedKeys(java.lang.String, java.lang.String, java.lang.String)

getCrossReference

public ResultSet getCrossReference(String primaryCatalog,
                                   String primarySchema,
                                   String primaryTable,
                                   String foreignCatalog,
                                   String foreignSchema,
                                   String foreignTable)
                            throws SQLException
Gets a description of the foreign key columns in the foreign key table that reference the primary key columns of the primary key table (describe how one table imports another's key.) This should normally return a single foreign key/primary key pair (most tables only import a foreign key from a table once.) They are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and KEY_SEQ.

Each foreign key column description has the following columns:

  1. PKTABLE_CAT String => primary key table catalog (may be null)
  2. PKTABLE_SCHEM String => primary key table schema (may be null)
  3. PKTABLE_NAME String => primary key table name
  4. PKCOLUMN_NAME String => primary key column name
  5. FKTABLE_CAT String => foreign key table catalog (may be null) being exported (may be null)
  6. FKTABLE_SCHEM String => foreign key table schema (may be null) being exported (may be null)
  7. FKTABLE_NAME String => foreign key table name being exported
  8. FKCOLUMN_NAME String => foreign key column name being exported
  9. KEY_SEQ short => sequence number within foreign key
  10. UPDATE_RULE short => What happens to foreign key when primary is updated:
    • importedNoAction - do not allow update of primary key if it has been imported
    • importedKeyCascade - change imported key to agree with primary key update
    • importedKeySetNull - change imported key to NULL if its primary key has been updated
    • importedKeySetDefault - change imported key to default values if its primary key has been updated
    • importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
  11. DELETE_RULE short => What happens to the foreign key when primary is deleted.
    • importedKeyNoAction - do not allow delete of primary key if it has been imported
    • importedKeyCascade - delete rows that import a deleted key
    • importedKeySetNull - change imported key to NULL if its primary key has been deleted
    • importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
    • importedKeySetDefault - change imported key to default if its primary key has been deleted
  12. FK_NAME String => foreign key name (may be null)
  13. PK_NAME String => primary key name (may be null)
  14. DEFERRABILITY short => can the evaluation of foreign key constraints be deferred until commit
    • importedKeyInitiallyDeferred - see SQL92 for definition
    • importedKeyInitiallyImmediate - see SQL92 for definition
    • importedKeyNotDeferrable - see SQL92 for definition
Parameters:
primaryCatalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
primarySchema - a schema name; "" retrieves those without a schema
primaryTable - the table name that exports the key
foreignCatalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
foreignSchema - a schema name; "" retrieves those without a schema
foreignTable - the table name that imports the key
Returns:
ResultSet - each row is a foreign key column description
Throws:
SQLException - if a database access error occurs
See Also:
getImportedKeys(java.lang.String, java.lang.String, java.lang.String)

getTypeInfo

public ResultSet getTypeInfo()
                      throws SQLException
Gets a description of all the standard SQL types supported by this database. They are ordered by DATA_TYPE and then by how closely the data type maps to the corresponding JDBC SQL type.

Each type description has the following columns:

  1. TYPE_NAME String => Type name
  2. DATA_TYPE short => SQL data type from java.sql.Types
  3. PRECISION int => maximum precision
  4. LITERAL_PREFIX String => prefix used to quote a literal (may be null)
  5. LITERAL_SUFFIX String => suffix used to quote a literal (may be null)
  6. CREATE_PARAMS String => parameters used in creating the type (may be null)
  7. NULLABLE short => can you use NULL for this type?
    • typeNoNulls - does not allow NULL values
    • typeNullable - allows NULL values
    • typeNullableUnknown - nullability unknown
  8. CASE_SENSITIVE boolean=> is it case sensitive?
  9. SEARCHABLE short => can you use "WHERE" based on this type:
    • typePredNone - No support
    • typePredChar - Only supported with WHERE .. LIKE
    • typePredBasic - Supported except for WHERE .. LIKE
    • typeSearchable - Supported for all WHERE ..
  10. UNSIGNED_ATTRIBUTE boolean => is it unsigned?
  11. FIXED_PREC_SCALE boolean => can it be a money value?
  12. AUTO_INCREMENT boolean => can it be used for an auto-increment value?
  13. LOCAL_TYPE_NAME String => localized version of type name (may be null)
  14. MINIMUM_SCALE short => minimum scale supported
  15. MAXIMUM_SCALE short => maximum scale supported
  16. SQL_DATA_TYPE int => unused
  17. SQL_DATETIME_SUB int => unused
  18. NUM_PREC_RADIX int => usually 2 or 10
Returns:
ResultSet - each row is an SQL type description
Throws:
SQLException - if a database access error occurs

getIndexInfo

public ResultSet getIndexInfo(String catalog,
                              String schema,
                              String table,
                              boolean unique,
                              boolean approximate)
                       throws SQLException
Gets a description of a table's indices and statistics. They are ordered by NON_UNIQUE, TYPE, INDEX_NAME, and ORDINAL_POSITION.

Each index column description has the following columns:

  1. TABLE_CAT String => table catalog (may be null)
  2. TABLE_SCHEM String => table schema (may be null)
  3. TABLE_NAME String => table name
  4. NON_UNIQUE boolean => Can index values be non-unique? false when TYPE is tableIndexStatistic
  5. INDEX_QUALIFIER String => index catalog (may be null); null when TYPE is tableIndexStatistic
  6. INDEX_NAME String => index name; null when TYPE is tableIndexStatistic
  7. TYPE short => index type:
    • tableIndexStatistic - this identifies table statistics that are returned in conjuction with a table's index descriptions
    • tableIndexClustered - this is a clustered index
    • tableIndexHashed - this is a hashed index
    • tableIndexOther - this is some other style of index
  8. ORDINAL_POSITION short => column sequence number within index; zero when TYPE is tableIndexStatistic
  9. COLUMN_NAME String => column name; null when TYPE is tableIndexStatistic
  10. ASC_OR_DESC String => column sort sequence, "A" => ascending, "D" => descending, may be null if sort sequence is not supported; null when TYPE is tableIndexStatistic
  11. CARDINALITY int => When TYPE is tableIndexStatistic, then this is the number of rows in the table; otherwise, it is the number of unique values in the index.
  12. PAGES int => When TYPE is tableIndexStatisic then this is the number of pages used for the table, otherwise it is the number of pages used for the current index.
  13. FILTER_CONDITION String => Filter condition, if any. (may be null)
Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schema - a schema name; "" retrieves those without a schema
table - a table name
unique - when true, return only indices for unique values; when false, return indices regardless of whether unique or not
approximate - when true, result is allowed to reflect approximate or out of data values; when false, results are requested to be accurate
Returns:
ResultSet - each row is an index column description
Throws:
SQLException - if a database access error occurs

supportsResultSetType

public boolean supportsResultSetType(int type)
                              throws SQLException
Does the database support the given result set type?
Parameters:
type - defined in java.sql.ResultSet
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
Connection, What Is in the JDBC 2.0 API

supportsResultSetConcurrency

public boolean supportsResultSetConcurrency(int type,
                                            int concurrency)
                                     throws SQLException
Does the database support the concurrency type in combination with the given result set type?
Parameters:
type - defined in java.sql.ResultSet
concurrency - type defined in java.sql.ResultSet
Returns:
true if so; false otherwise
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
Connection, What Is in the JDBC 2.0 API

ownUpdatesAreVisible

public boolean ownUpdatesAreVisible(int type)
                             throws SQLException
Indicates whether a result set's own updates are visible.
Parameters:
result - set type, i.e. ResultSet.TYPE_XXX
Returns:
true if updates are visible for the result set type; false otherwise
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

ownDeletesAreVisible

public boolean ownDeletesAreVisible(int type)
                             throws SQLException
Indicates whether a result set's own deletes are visible.
Parameters:
result - set type, i.e. ResultSet.TYPE_XXX
Returns:
true if deletes are visible for the result set type; false otherwise
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

ownInsertsAreVisible

public boolean ownInsertsAreVisible(int type)
                             throws SQLException
Indicates whether a result set's own inserts are visible.
Parameters:
result - set type, i.e. ResultSet.TYPE_XXX
Returns:
true if inserts are visible for the result set type; false otherwise
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

othersUpdatesAreVisible

public boolean othersUpdatesAreVisible(int type)
                                throws SQLException
Indicates whether updates made by others are visible.
Parameters:
result - set type, i.e. ResultSet.TYPE_XXX
Returns:
true if updates made by others are visible for the result set type; false otherwise
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

othersDeletesAreVisible

public boolean othersDeletesAreVisible(int type)
                                throws SQLException
Indicates whether deletes made by others are visible.
Parameters:
result - set type, i.e. ResultSet.TYPE_XXX
Returns:
true if deletes made by others are visible for the result set type; false otherwise
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

othersInsertsAreVisible

public boolean othersInsertsAreVisible(int type)
                                throws SQLException
Indicates whether inserts made by others are visible.
Parameters:
result - set type, i.e. ResultSet.TYPE_XXX
Returns:
true if updates are visible for the result set type
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

updatesAreDetected

public boolean updatesAreDetected(int type)
                           throws SQLException
Indicates whether or not a visible row update can be detected by calling the method ResultSet.rowUpdated.
Parameters:
result - set type, i.e. ResultSet.TYPE_XXX
Returns:
true if changes are detected by the result set type; false otherwise
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

deletesAreDetected

public boolean deletesAreDetected(int type)
                           throws SQLException
Indicates whether or not a visible row delete can be detected by calling ResultSet.rowDeleted(). If deletesAreDetected() returns false, then deleted rows are removed from the result set.
Parameters:
result - set type, i.e. ResultSet.TYPE_XXX
Returns:
true if changes are detected by the resultset type
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

insertsAreDetected

public boolean insertsAreDetected(int type)
                           throws SQLException
Indicates whether or not a visible row insert can be detected by calling ResultSet.rowInserted().
Parameters:
result - set type, i.e. ResultSet.TYPE_XXX
Returns:
true if changes are detected by the resultset type
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

supportsBatchUpdates

public boolean supportsBatchUpdates()
                             throws SQLException
Indicates whether the driver supports batch updates.
Returns:
true if the driver supports batch updates; false otherwise
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

getUDTs

public ResultSet getUDTs(String catalog,
                         String schemaPattern,
                         String typeNamePattern,
                         int[] types)
                  throws SQLException
Gets a description of the user-defined types defined in a particular schema. Schema-specific UDTs may have type JAVA_OBJECT, STRUCT, or DISTINCT.

Only types matching the catalog, schema, type name and type criteria are returned. They are ordered by DATA_TYPE, TYPE_SCHEM and TYPE_NAME. The type name parameter may be a fully-qualified name. In this case, the catalog and schemaPattern parameters are ignored.

Each type description has the following columns:

  1. TYPE_CAT String => the type's catalog (may be null)
  2. TYPE_SCHEM String => type's schema (may be null)
  3. TYPE_NAME String => type name
  4. CLASS_NAME String => Java class name
  5. DATA_TYPE String => type value defined in java.sql.Types. One of JAVA_OBJECT, STRUCT, or DISTINCT
  6. REMARKS String => explanatory comment on the type

Note: If the driver does not support UDTs, an empty result set is returned.

Parameters:
catalog - a catalog name; "" retrieves those without a catalog; null means drop catalog name from the selection criteria
schemaPattern - a schema name pattern; "" retrieves those without a schema
typeNamePattern - a type name pattern; may be a fully-qualified name
types - a list of user-named types to include (JAVA_OBJECT, STRUCT, or DISTINCT); null returns all types
Returns:
ResultSet - each row is a type description
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

getConnection

public Connection getConnection()
                         throws SQLException
Retrieves the connection that produced this metadata object.
Returns:
the connection that produced this metadata object
Since:
1.2
See Also:
What Is in the JDBC 2.0 API

JavaTM 2 Platform
Std. Ed. v1.3.1

Submit a bug or feature
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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