Hibernate is a popular open source object/relational persistence and querysystem and an alternative to Enterprise Java Beans. Compared to EJB,Hibernate is less complex, more easily portable and more powerful for linkingJava with traditional relational databases. Hibernate supports many relationaldatabases including: DB2, Informix, MySQL, Oracle, SAP DB, SQL Server,Sybase, and is downloaded over 23,000 times a month on average in 2004. Thisbook provides J2EE developers with a pratical hands-on guide to working withHibernate and their existing databases. Through numerous code examples andcase studies, the author helps reinforce what Hibernate is and how to use it.