Hi, >Hibernate In Action is a pretty good book on the > subject. Unfortunately, I think it still only covers up to version 2 of > hibernate. check the 2nd edition http://www.amazon.com/Java-Persistence-Hibernate-Christian-Bauer/dp/1932394885/sr=8-1/qid=1171284946/ref=pd_bbs_sr_1/002-2939205-7142447?ie=UTF8&s=books it should cover Hibernate up to 3.2 Additionally I thing a good knowledge of the CODASYL network model is advantageous. I found myself re-reading the Bachman's manifest "The Programmer as navigator" when I first time met Hibernate (http://portal.acm.org/citation.cfm?id=362534&coll=portal&dl=ACM) Jaromir -- //www.freelists.org/webpage/oracle-l