Must Read MSDN Magazine Article
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
Introducing New Features In The VSTS Database Edition GDR
Enjoy the great read!