今天我们来看下差异变更页(Differential Change Map:DCM),还有差异备份(differential backups)。差异变更页(Differential Change Map:DCM ) :.
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今天我们来看下差异变更页(Differential Change Map:DCM ),还有差异备份(differential backups)。 差异变更页(Differential Change Map:DCM ) :SQL Server使用差异变更页来跟踪自上次完全备份后修改过的区。
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以上来源于: WordNet
For large databases, differential backups can occur at shorter intervals than database backups, which reduces the work-loss exposure.
对于大型数据库,进行差异备份的间隔可以比数据库备份更短,从而可降低丢失工作的可能性。
This let you supplement a partial backup with a short series of differential partial backups.
这样,您可以通过为数不多的几个部分差异备份来补充部分备份。
Differential database backups are smaller and faster than full database backups.
与完全数据库备份相比,差异数据库备份体积更小,速度也更快。
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