Xlive

: The concept of "virtual documents" in XLive is a direct ancestor to modern data virtualization tools used by major enterprises.

Despite the service being effectively dead, thousands of gamers still own discs or Steam keys for GFWL titles. If you are trying to play a classic and hitting a wall, here is the modern fix: : The concept of "virtual documents" in XLive

The integration of heterogeneous sources—ranging from standard web services to relational databases—requires a flexible query language. XLive was developed to address the complexity of XQuery evaluation in such environments. It acts as a mediator, allowing users to query multiple remote sources as if they were a single local repository. 2. The TGV Model : The concept of "virtual documents" in XLive