This provides several benefits, including improved performance when adding or removing partitions and the ability to perform select maintenance operations at the partition level.

这提供了几个好处，包括添加或删除分区时的性能提升和在分区级别执行选择维护操作的能力。

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For a better and more flexible maintenance option, you can choose to back up at the table space level.

作为一种更好、更灵活的维护选项，可以选择在表空间级进行备份。

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At a general level, though, they encapsulate one or more of the following basic session-maintenance mechanisms in an abstract interface.

但是，总的来说，它们都是把下面的会话维护机制封装在一个抽象接口中。

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The stock trades at 21 times its adjusted funds from operations (net plus depreciation minus maintenance-level capital outlays).

FORBES: Magazine Article

At the local level, water-user associations responsible for the management and maintenance of irrigation canals have been set up with foreign help.

ECONOMIST: The heavy costs of non-co-operation