Any time you are dealing with existing data in a database, it's crucial to have an up-to-date backup.
无论什么时候处理数据库中的现有数据，都要有一份最新的备份。
In other words, you must take a full database backup so that you have a baseline against which incremental backups can be taken.
换句话说，您必须对数据库进行完整的备份，从而为执行增量备份提供一个基准点。
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。
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