Oracle JDBC Mapping

SQL and PL/SQL Data Type	Oracle Mapping	JDBC Mapping
CHAR, CHARACTER, LONG, STRING, VARCHAR, VARCHAR2	oracle.sql.CHAR	java.lang.String
NCHAR, NVARCHAR2	oracle.sql.NCHAR (note 1)	oracle.sql.NString (note 1)
NCLOB	oracle.sql.NCLOB (note 1)	oracle.sql.NCLOB (note 1)
RAW, LONG RAW	oracle.sql.RAW	byte[]
BINARY_INTEGER, NATURAL, NATURALN, PLS_INTEGER, POSITIVE, POSITIVEN,SIGNTYPE, INT, INTEGER	oracle.sql.NUMBER	int
DEC, DECIMAL, NUMBER, NUMERIC	oracle.sql.NUMBER	java.math.BigDecimal
DOUBLE PRECISION, FLOAT	oracle.sql.NUMBER	double
SMALLINT	oracle.sql.NUMBER	int
REAL	oracle.sql.NUMBER	float
DATE	oracle.sql.DATE	java.sql.Timestamp
TIMESTAMP TIMESTAMP WITH TZ TIMESTAMP WITH LOCAL TZ	oracle.sql.TIMESTAMP oracle.sql.TIMESTAMPTZ oracle.sql.TIMESTAMPLTZ	java.sql.Timestamp
INTERVAL YEAR TO MONTH INTERVAL DAY TO SECOND	String (note 2)	String (note 2)
ROWID, UROWID	oracle.sql.ROWID	oracle.sql.ROWID
BOOLEAN	boolean (note 3)	boolean (note 3)
CLOB	oracle.sql.CLOB	java.sql.Clob
BLOB	oracle.sql.BLOB	java.sql.Blob
BFILE	oracle.sql.BFILE	oracle.sql.BFILE
Object types	Generated class	Generated class
SQLJ object types	Java class defined at type creation	Java class defined at type creation
OPAQUE types	Generated or predefined class (note 4)	Generated or predefined class (note 4)
RECORD types	Through mapping to SQL object type (note 5)	Through mapping to SQL object type (note 5)
Nested table, VARRAY	Generated class implemented usingoracle.sql.ARRAY	java.sql.Array
Reference to object type	Generated class implemented usingoracle.sql.REF	java.sql.Ref
REF CURSOR	java.sql.ResultSet	java.sql.ResultSet
Index-by tables	Through mapping to SQL collection (note 6)	Through mapping to SQL collection (note 6)
Scalar (numeric or character) Index-by tables	Through mapping to Java array (note 7)	Through mapping to Java array (note 7)