Defines handling of the standard `JDBC`-defined types, as declared by {@link java.sql.Types}.

We omit certain `JDBC` types here solely because Hibernate does not use them itself, not due to any inability to provide proper descriptors for them. Known omissions include:

- {@link java.sql.Types#ARRAY ARRAY}
- {@link java.sql.Types#DATALINK DATALINK}
- {@link java.sql.Types#DISTINCT DISTINCT}
- {@link java.sql.Types#STRUCT STRUCT}
- {@link java.sql.Types#REF REF}
- {@link java.sql.Types#JAVA_OBJECT JAVA_OBJECT}

See http://java.sun.com/j2se/1.5.0/docs/guide/jdbc/getstart/mapping.html#996857 for more information.