为了简化调试一组复杂的SQL命令，将其写入文本文件中然后一次执行文本文件中的所有命令通常更加容易。
To simplify debugging a set of complex SQL commands, it's generally easier to write them in a text file and then execute the commands in the text file all at once.
这意味着您只需打包一次BAR文件，在开发机器中使用一组参数值来对它做测试，然后将它部署到使用另一组参数值的生产环境中，而不必重新编译。
It means you can package a BAR file once, test it on a development machine using one set of parameter values, and then deploy it to the production environment using another, without recompiling.
文件与文件组备份——一次备份数据库的一部分。
File and file group backup — Backs up a portion of the database at a time.
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