在联邦系统中，服务器表示远程数据源上的一个数据集合。

In a federated system a server represents a collection of data on the remote data source.

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主数据通常分散在企业中的多个数据源系统中，这会导致主数据不一致、不完整且质量差。

Master data typically is scattered throughout the enterprise in multiple source systems which makes it inconsistent, incomplete and of poor quality.

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如果一个数据源中的数据定义被更改，对其他系统的影响就会加倍，而且通常很难预测。

If data definition in one data source is changed, the impact to other systems is multiplied and often unpredictable.

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