●例:在磁盘上创建了一个备份设备程序 use master exec sp addumpdevice ' disk backup company’, c: mssql7backupbk company. bak⚫例：在磁盘上创建了一个备份设备程序 use master exec sp_addumpdevice ‘disk’, ‘backup_company’, ‘c:\mssql7\backup\bk_company.bak’