Keywords: Capability reports, Column metadata, Function metadata, Procedure metadata, Schema metadata

# java.sql.DatabaseMetaData interface: JDBC 4.0 features

Derby implements all of the new metadata methods added by JDBC 4.0.

- Capability reports - JDBC 4.0 adds new methods for querying the capabilities of a database. These include autoCommitFailureClosesAllResultSets, providesQueryObjectGenerator, getClientInfoProperties, and supportsStoredFunctionsUsingCallSyntax.
- Column metadata - The getColumns method reports IS_AUTOINCREMENT = YES if a column is generated.
- Function metadata - JDBC 4.0 adds new methods for inspecting the arguments and return types of functions, including user-defined functions. These new methods are getFunctions and getFunctionColumns. These methods behave similarly to getProcedures and getProcedureColumns.
- Procedure metadata - The getProcedureColumns method reports additional information about procedure arguments. For more information, see the javadoc for this method. The new columns in the ResultSet returned by getProcedureColumns are: COLUMN_DEF, SQL_DATA_TYPE, SQL_DATETIME_SUB, CHAR_OCTET_LENGTH, ORDINAL_POSITION, IS_NULLABLE, and SPECIFIC_NAME.
- Schema metadata - JDBC 4.0 adds a new getSchemas overload, which lets you look up schemas based on a name pattern.

Parent topic: JDBC 4.0-only features
Related reference
Refined subclasses of SQLException
java.sql.Connection interface: JDBC 4.0 features
java.sql.Statement interface: JDBC 4.0 features
javax.sql.DataSource interface: JDBC 4.0 features