用户映射-对于希望用前面定义的服务器对象访问远程数据库的每个用户，都必须创建一个用户映射。

User mapping - a user mapping has to be defined for each user who wants to access the remote database using the previously defined server object.

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最初并未预期或计划将其用于配置文件、远程过程调用、对象串行化、数据库转储和类似的面向开发的任务。

Its use for config files, remote procedure calls, object serialization, database dumps, and similar developer-oriented tasks wasn't anticipated or planned for.

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联邦技术将您带到更高级别的信息集成，它允许DB 2联邦系统充当一个虚拟的数据库，使得对远程对象的查询和对本地表的查询一样简单。

Federation takes you to the next level of information integration, allowing the DB2 federated system to act as a virtual database where remote objects can be queried like local tables.

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