>The middle tier (Application Services/Data Access) being built with VFP 6.0 via Com/DCom objects that do not care about the backend they are accessing (Possibly loading as packages in MTS) so the backend could be swapped out.
>
>Develop web service layer using active serve pages that use same middle tear com objects to access data.
>
>What is the best transport form com objects.?
>
>Does anybody know of any case studies,examples.
>What is everybody else doing with respect to 3 tier solutions.

I think alot of this have to do with what form your front ends will take.

If you are going to write your UI with IE5, you might want to send XML from the middle tier... You might want to pass ADO recordsets back and forth... you might want to Send string data or pass an object that you have scattered.

As far as making it back end independent, use REMOTE views to comunication with the back end. Make sure they all have parameters.

I have been doing alot of research on this issue, and am planning on putting togther a white paper, if I get a change... RIght now, I have been testing some things. (such as above)

BOb