Compare and Synchronize database Schemas

Exploring Visual Studio 2010’s Database Tools
http://www.sqlmag.com/article/visual-studio-20102/visual-studio-2010s-database-tools-135987

How to: Compare Database Schemas, Visual Studio 2010
http://msdn.microsoft.com/en-us/library/aa833435.aspx

Compare and Synchronize Database Schemas, Visual Studio 2010
http://msdn.microsoft.com/en-us/library/dd193250.aspx

How to: Compare the Data of Two Databases, Visual Studio 2008
http://msdn.microsoft.com/en-us/library/aa833428(v=VS.90).aspx

How to: Compare the Data of Two Databases, Visual Studio 2005
http://msdn.microsoft.com/en-us/library/aa833428(v=vs.80).aspx