Rename a SQL Server database

 Note: If not done. Change user type muti-user to single user

This command works for SQL Server 2005, 2008, 2008R2 and 2012:

ALTER DATABASE oldName MODIFY NAME = newName

If you are using SQL Server 2000 you can use this T-SQL command to make the database name change.  This still works for SQL 2005, 2008, 2008R2 and 2012, but Microsoft says it will be phased out at some time.

EXEC sp_renamedb 'oldName', 'newName'