The best way to validate that a database backup is working, is to:验证数据库备份是否正常工作的最佳方法是::()?
（A）Appoint a special DBA in charge of backups指定专门的DBA负责备份
（B）Check the backup logs every day每天检查备份日志
（C）Periodically recover from the backup file定期从备份文件恢复
（D）Check for the automatic email notification of backup success检查备份成功的自动电子邮件通知
（E）Check the size of the backup file检查备份文件的大小 答案解析:
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