restore
----Make Database to single user Mode
ALTER DATABASE YourDB
SET SINGLE_USER WITH
ROLLBACK IMMEDIATE
----Restore Database
RESTORE DATABASE YourDB
FROM DISK = 'D:\BackUpYourBaackUpFile.bak'
WITH MOVE 'YourMDFLogicalName' TO 'D:\DataYourMDFFile.mdf',
MOVE 'YourLDFLogicalName' TO 'D:\DataYourLDFFile.ldf'
/*If there is no error in statement before database will be in multiuser
mode.
If error occurs please execute following command it will convert
database in multi user.*/
ALTER DATABASE YourDB SET MULTI_USER
GO