There have been a number of questions in this forum asking about mapping a single entity bean to multiple tables in a database. I know that this is possible and how to achieve it, however, I would like your opinion on whether this would ver be a good idea. In EJB 2.0, CMR means that we can effectively map 1 bean to 1 table and allow the container to manage the relationships. Can anyone think of a situation where this shouldn't be used and instead you should map 1 bean to multiple tables yourself? Thanks for any thoughts on the matter.