Really,I am not new in java.But EJB especially CMP bean is very complex for me.I read a example in MyEclipse's web site.But i can not learn somthing useful from it.I do need a complete example to tell me how to write CMP BEAN,I hope this bean explain how to handle relationship between two database table ,and tell me some basic rule for write ejbquery statement to manipulate multi tables through one EJB. I know here are many enthusiastic jboss and ejb master,can you direct me or give me sourcecode or give me a good link to get some helpful information ? thanks very much View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3957395#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...