Article: Persistence Pays Offs: Advanced Mapping with JPA

Few weeks ago I blogged about JPA and how I believe it will be the future of ORM. After a first article introducing basic concepts, I wrote a second one for DevX showing how to use JPA to map inheritance, one-to-many, and many-to-many relationships. And also a little bit more of query language (JPQL) to query concrete and abstract classes.

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