Jamie Laflen and Barclay Hill wrote a great, must read article for MSDN Magazine, detailing the Visual Studio Team System 2008 Database Edition GDR functionality. Besides that it has a great intro describing the base principles of offline database schema development.

Check out MSDN Magazine March 2009
March2009

Database Development
Introducing New Features In The VSTS Database Edition GDR
http://msdn.microsoft.com/en-us/magazine/dd483214.aspx

Enjoy the great read!
-GertD