Gangadhara Melukote thinks this is interesting: Introduction From CHAPTER 1: Introduction from Pro JPA 2, Second Edition by Merrick Schincariol, Mike Keith Publisher: Apress Released: September 2013 Note JPA 2.0 is based on JSR 317 JPA 2.1 is absed on JSR 338 Share this highlight http://www.safaribooksonline.com/a/pro-jpa-2/7273648/ Twitter Facebook Google Plus Email Get Instant Access Now Start a Free Trial Learn about Safari for Business Have an account? Sign in. Minimise Unlock the rest of Pro JPA 2, Second Edition and 30,000 other books and videos By clicking this box, you confirm that you have read and agree to the terms and conditions of our Membership Agreement, and you understand that when your trial period ends, you will be required to provide billing information if you wish to continue using the service. Unlock the rest of this book Start a Free 10-Day Trial loading Learn about Safari for Business Have an account? Sign in.