After setting this parameter to " yes " , you must take a full database backup in order to have a baseline against which incremental backups can be taken 在将该参数设置为“ yes ”之后,您必须执行完全数据库备份,以便在可以采用哪些增量备份上有一个基线。
To restore without losing data , you will restore from the first sunday backup , followed by incremental backup taken on saturday and roll forward 要进行恢复,而又不丢失数据,那么您需要从第一个星期天备份恢复,然后恢复星期六取得的增量备份并进行前滚。
In the case of a failure for example on saturday after the incremental backup is taken , you can just restore the first sunday full backup and apply the incremental on saturday 在备份失败的情况下,例如,在执行了增量备份后的星期六,您只可以恢复第一个星期天的完全备份,并应用星期六的增量备份。
When this parameter is set to " yes " , the database manager tracks database modifications so that the backup utility can detect which subsets of the database pages must be examined by an incremental backup and potentially included in the backup image 在将该参数设置为“ yes ”时,数据库管理器就会跟踪数据库修改,这样,备份实用程序就能够检测数据库页面的哪些子集必须由增量备份负责检查,以及备份映像中可能包括哪些子集。