SQL Server 2000 deletes database backup files

Copy codeThe Code is as follows:
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How to delete database backup in SQL Server 2000
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-- You can first back up the database [TestDB]
Backup database TestDB TO Disk = 'e: \ database backup \ TestDB_20090829.bak 'with init;
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-- Add the logical variable name of the backup database [testdbbk]
Sp_addumpdevice 'disk', 'testdbbk ', 'e: \ Database Backup \ TestDB_20090829.bak ';
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-- Delete the database backup file [E: \ Database Backup \ TestDB_20090829.bak] by deleting the logical variable name [testdbbk] of the backup database.
Sp_dropdevice 'testdbbk ', 'delfile ';
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Sp_helpdevice;
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