The ability to mock out a database table in-memory is a huge time saver, especially when you consider how long it takes to start up an actual database.

在内存中模拟数据库表可以节省大量时间，尤其是在启动实际数据库需要很长时间时。

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Usually media failure is caused by either the complete loss of a data file or a system change number (SCN) time stamp being out of sync with the rest of the database.

通常媒体故障是由于数据文件完全丢失或系统更改编号（System Change Number，SCN）时间戳与数据库的其余部分不同步造成的。

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In this case, mocking out the database interaction allows you to focus on the Grails functionality, doing it in a fraction of the time it would otherwise take.

在这种情况下，模拟数据库交互可以使您专注于Grails功能，只花少部分时间来进行测试。

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So every time the tag is read, a real-time connection to that database is needed to work out how to route the bag.

ECONOMIST: REPORTS

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