in the book Mastering
EJB II, it states that a OO system should contains 2 types of components.
1. Application logic component (action)
2. Persistant data component (data)
that really confuses me because in OO, aren't we suppose to have behavior+data in the same object? is that because of the fact that we are using EJB.. we have to separate them in Session bean and entity bean???
pls clarify.