Note : Download SQL Server Modeling CTP – Nov 2009 Release 2 (formerly Oslo) by Microsoft
SQL Server Modeling (formerly code name “Oslo”) is a set of future technologies that provide significant productivity gains across the lifecycle of .NET applications by enabling developers, architects, and IT professionals to work together more effectively with SQL Server at the center of the application lifecycle.
The components of the SQL Server Modeling CTP are:
Abstract courtesy : Microsoft
Reference: Pinal Dave (http://blog.SQLAuthority.com)