>The idea of just plugging in a back end and everything works is not a total reality at this time.

Of course not. But it would be a whole lot easier if the business rules handle the RI.

> The whole reason for having biz objects and data objects is that you can change out the backend, replace the data objects, and everything stays the same.

Right. My point exactly. < g>

> JVP, in another thread, has been advocating stored procedures as the place for the data objects to reside and have all data access go through them.

I don't know which thread you are refering, too. If you would point it out I might better see your point.