>You might want to search "business object" as well. Jim booth's book on OO Design covers them.
>
>Also, there are three frameworks I know of that rely on them: Mere Mortals, Visual Fox Express, and Codebook.

uhhhh... actually the business object manages CRUD actions and validation on a "data object", the true data object atleast in the MMF framework is the object created from a data environment class.

For some of the stuff I'm rolling my own on these days (non MMF) I'm opting more towards the purist approach of a data object and building off a session class.