I'd suggest looking at the JPA 2.0 spec [1] or some of the OpenJPA unit tests[2].
Thanks, Rick [1] http://jcp.org/en/jsr/detail?id=317 [2] https://svn.apache.org/repos/asf/openjpa/trunk/openjpa-persistence-jdbc/src/test/resources/org/apache/openjpa/persistence/entity/orm.xml https://svn.apache.org/repos/asf/openjpa/trunk/openjpa-persistence-jdbc/src/test/resources/META-INF/
