The third differential backup is large enough that the next backup is a database backup . this establishes a new differential base 第三个差异备份很大，足以使下一个备份成为数据库备份，从而将建立新的差异基准。
2.
The third differential backup is large enough that the next backup is a full database backup . this establishes a new differential base 第三个差异备份很大，足以使下一个备份成为完整数据库备份，从而建立新的差异基准。
