为了生活在管道中，实用程序需要从标准输入读取数据，然后向标准输出写出数据。

To live in a pipeline, a utility needs to read data from standard input and write data to standard output.

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这意味者开发人员必须手工写出数据在模型和视图来回同步的两套代码。

This means that the developer has to write code that constantly syncs the view with the model and the model with the view.

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备份期间DB2用于写出数据的介质进程(media process)是构建在一套公布的接口之上的，从1993年开始这些接口就已经向开发市场提供。

The media processes that DB2 USES to write data out during a backup are built on a published set of interfaces that have been available to the open market since 1993.

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