下图阐述了差异增量备份的概念。
The diagram below illustrates the concept of differential incremental backup.
图65阐述了累积增量备份的概念。
Figure 65 illustrates the concept of cumulative incremental backup.
增量备份意味着仅对更改进行备份。
在星期一，需要执行增量备份。
这就是增量备份的工作原理。
有两种类型的增量备份。
从星期二到星期六，可以重复增量备份过程。
For Tuesday to Saturday, repeat the incremental backup process.
Oracle提供了两种类型的增量备份。
There are two types of incremental backups provided by Oracle.
注意，允许进行组合数据库和表空间增量备份。
Note that the combination database and table space incremental backups are permitted.
在备份之后，增量备份就可以包含新的表空间。
After the backup, incremental backups are permitted to contain the new table space.
个或1个增量备份。
下面的步骤向您展示了如何执行增量备份和恢复。
The steps below show you how to do an incremental backup and restore.
增量备份首先在V7.2 版中找到立身之处。
Incremental backup first made its way into the product in the V7.2 release.
在需要的时候，可以重复这个过程来添加增量备份。
This process could be repeated to add the incremental backups if required.
如果一个页面未发生任何更改，增量备份就会跳过它。
If nothing changes on the page, the incremental backup skips it.
还可以使用脚本来执行更精细的操作，比如增量备份。
Scripting can also be used to perform much more elaborate actions such as incremental backups.
我们每周执行一次完整备份，每天执行一次增量备份。
We perform full backups every week and incremental backups daily.
下面的例子显示了如何为SAMPLE启用增量备份？
The following example shows how you would enable incremental backup for the SAMPLE database.
这是因为，当然，简单来说就是数据库增量备份的问题。
This is, of course, simply the incremental database backups problem.
本文讨论对数据仓库的最大备份改进之一——增量备份。
This article discusses one of the most powerful backup improvements for data warehouses - incremental backup.
增量备份是自最近成功的完全备份以来所有更改的备份。
An incremental backup is a backup of all changes since the most recent, successful, full backup.
增量备份。
要恢复增量备份，只需要两步，恢复增量数据库并前滚。
To recover from the incremental backup, there are only two steps to follow, Restore the incremental database and roll forward to completion.
增量备份。
增量备份是最近一次成功的全备份以来的所有修改的备份。
An incremental backup is a backup of all changes since the most recent successful, full backup.
差异备份以上一次的增量备份或差异备份为基础。
Delta backups are based on the last incremental or delta backup.
这很容易解决，您只需要从增量备份中提取昨晚的版本即可。
No problem, all you need to do is grab the version from last night from the incremental backup.
增量备份允许只备份自上一次备份以来发生变化的索引和数据页。
Incremental backup allows you to back up only index and data pages that have changed since a previous backup.
增量备份非常合理，因为它们减少了还原数据库服务器所需的时间。
Incremental backups are reasonable because they reduce the time needed to restore the database server.
从这个图中可以看到，增量备份实际上是以上一次的完全备份为基础。
From this figure you can see that an incremental backup is really based on the last full backup.
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