I get a lot of questions about what's included in DB2 Advance ESE where data federation (virtualization) and replication technologies are concerned. Some of them are simple licensing questions about what you get for no extra charge. However, many more are about basic functionality. developerWorks helps out in both cases. For the questions about function, there's a new article on developerWorks. It's part of a series IBM is doing to detail the benefits of DB2 Advanced ESE. The article is currently featured on developerWorks' main page for Information Management topics. If you need an introduction to IBM's data federation or Q Replication technologies, this is an excellent place to start (of course, it says I wrote the article, so maybe I'm biased :)
If you have any questions about the "no cost" aspects of DB2 AESE's Federation or Q Replication, there's a developerWorks group for each technology. dW's Federation Server group answers questions about the data federation built into DB2 and InfoSphere Warehouse as well as what's in the stand-alone Federation Server product. dW's Replication Server group answers questions about IBM's two data replication technologies called Q Replication and SQL Replication, including questions about what comes with DB2 and InfoSphere Warehouse.