Hi, I am not sure if it is the right place to post this question ... What is the difference between the Java Persistence API and Hibernate? I think the things go this way: JPA is only specification (like EJB3.0) and TopLink, Hibernate and others persistence providers are implementations of this spec. (like JBoss implements EJB3). The thing that makes me confussed is that the Hibernate is known to be used before JPA appeared, so can I use some kind of Hibernate sepcific syntax to provide persistence to my objects in EJB3 application? That's a little bit wierd. Thanks for help. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3963769#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...