This has made huge advances in ease of development, and simplified programming model drastically that has been widely recognized. Mike Keith, EJB 3.0 co-specification lead, and Merrick Schinariol, reviewer of EJB 3.0, offering insight and expertise unmatched in the specification of the new EJB 3.0 persistence, in this definitive guide to EJB 3.0 persistence technology. Expect full coverage and examination of EJB 3.0 spec from expert authors, including: The new EntityManager API The new features of EJB Query Language (EJB QL) basic and advanced object-relational mapping Advanced topics like concurrency, locking inheritance, and polymorphism Assuming a basic knowledge of Java, SQL, JDBC, and some J2EE experience, Mike Keith and Merrick Schinariol will teach you EJB 3 persistence from the ground up.