The database can be renamed in three ways.
Use the following T-SQL: command to make the database name change.
EXEC sp_renamedb 'oldName', 'newName'
This command works for both SQL Server 2000 and SQL Server 2005, but this feature will not be supported in future versions of SQL Server. The new command that should be used for SQL Serer 2005 and beyond is:
ALTER DATABASE oldName MODIFY NAME = newName
If you are using SQL Server Management Studio, right click on the database name and select the new option "rename". This did not exist in SQL Server 2000, but if you use Management Studio to manage your SQL Server 2000 server you can take advantage of this option for your SQL Server 2000 instances.
Use the detach and attach feature of SQL Server to detach the database first and when you reattach the database you give the database a different name. This can be done by using the GUI or you can do this by using the following commands:
EXEC sp_detach_db 'oldName', 'true'
EXEC sp_attach_db @dbname = N'newName', @filename1 = N'c:\Program Files\Microsoft SQL Server\MSSQL\Data\pubs.mdf', @filename2 = N'c:\Program Files\Microsoft SQL Server\MSSQL\Data\pubs_log.ldf'
Here we are detaching database "Test"