What are SQL3 data types?
STRUCT: This is the default mapping for any SQL structured type, and is manifest by the java.sql.Struct type.
REF: Serves as a reference to SQL data within the database. Can be passed as a parameter to a SQL statement. Mapped to the java.sql.Ref type.
CLOB: Contains character large objects. Mapped to the java.sql.Clob type.
ARRAY: Can store values of a specified type. Mapped to the java.sql.Array type.
You can retrieve, store and update SQL3 types using the corresponding getXXX(), setXXX(), and updateXXX() methods defined in ResultSet interface