数据库备份与恢复解决方案可能同时提供在线(数据库可以保持活动)与离线(数据库必须不活动)备份功能，二者各有优缺点。

Database backup and restore solutions may provide both online (database can remain active) and offline (database must be inactive) backup capabilities, each of which provides benefits and drawbacks.

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大多数情况下，数据库系统本身将提供一种或多种备份与恢复机制，作为产品的组成部分。

In most cases, the database system itself will provide one or more backup and restore mechanisms as part of the product.

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DB 2恢复命令调用DB2包含在数据库备份映像中的代理，然后DB 2代理通过与安全服务器通信对其进行解密。

The DB2 restore command invokes the DB2 agent contained in the database backup image, and the DB2 agent decrypts it by communicating with the security server.

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