Is it Possible to Query Multiple Databases with WCF Data Services?

I think you have to write a facade service that will dispatch the query to the underlying - either in sequence or in parallel. You will typically create the facade in such a way that the WCF Data Service uses the Reflection Provider and you can use LINQ to SQL or Entity Framework for the underlying databases.

I posted the question on the MSDN forums and found out that it will require a lot of effort.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.