use master ifnotexists (select*from sysdatabases where name=\'HSSY\' BEGIN createdatabase HSSY END ifexists (select*from sysdevices where name=\'HSSY\') BEGIN EXEC sp_dropdevice \'HSSY\' END Else BEGIN EXEC sp_addumpdevice \'disk\',\'HSSY\', \'C:\DataBase.db\' END restoredatabase HSSY fromdisk=\'C:\DataBase.db\' withreplace