vs2010
vs2012
http://channel9.msdn.com/Events/Visual-Studio/Launch-2013/VS108
you can use VSDBCMD.EXE or SqlPackage.exe to gerernate sql schema file (*.dbschema)
http://blog.sqltrainer.com/2008/10/using-vsdbcmd-utility-to-generate.html
2. red-gate compare tool
http://www.red-gate.com/products/sql-development/sql-compare/