[eluser]bEz[/eluser]
I heard it from afar... "DEEP RELATIONSHIPS" let's meditate.
If you adhere to the conventions of DMZ db setup, and you eventually wrap yourself with that concept and the schema of your database requirements, you will find that "DR" is so so the answer to this scenario.
I caught this discussion on a whim, and will try to provide some insight if I can. However, the old cliche of "the Manaul has your answer" applies here to save the day.