anonymous wrote : 1 how does the entity beans map the DB table? By default the unqualified classname is the table name unless overriden with @Table(name="") annotation. anonymous wrote : aslo, I found the name of entity property is the same with the column name in the DB, is this necessary? By default the column name is the field/property name unless overridden with the @Column(name="") annotation. This is all in the EJB3 peristence spec and the Hibernate Annotations manual. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3960974#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...