... 差动齿轮 differential gear 微分增量备份 differential incremental backup 微分输入 differential inputs ...
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The diagram below illustrates the concept of differential incremental backup.
下图阐述了差异增量备份的概念。
Dealing with huge databases such as those in data warehouse environment, both Oracle and DB2 provide incremental and differential backup to avoid copying unchanged data pages.
在处理像数据仓库环境中数据库那样的巨型数据库方面，Oracle和DB 2都提供了增量和差异备份，避免复制未更改的数据页。
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