"Hibernate (Hibernate)":http://hibernate.org/ is a powerful, high performance object/relational persistence and query service. Hibernate lets you develop persistent classes following object-oriented idiom - including association, inheritance, polymorphism, composition, and collections. Hibernate allows you to express queries in its own portable SQL extension (HQL), as well as in native SQL, or with an object-oriented Criteria and Example API.

Hibernate is a Professional Open Source project and a critical component of the JBoss Enterprise Middleware System (JEMS) suite of products.

References;

* "Introduction to Hibernate (Introduction to Hibernate)":http://www.systemmobile.com/articles/IntroductionToHibernate.html
* "Hibernate - Sourceforce (Hibernate - Sourceforce)":http://sourceforge.net/projects/hibernate