这还确保应用程序后端以您通常的特权运行，这样就不会导致关键的文件对外公开，这是一个重要的安全措施。

It also ensures that your application back end runs with your usual privileges, so you don't have to make crucial files world-writeable, which is a big plus.

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通过使用可信上下文，可以在使用受限制的、敏感的特权时提供更强的控制，并且使中间层服务器或应用程序可以向数据库服务器确定用户的身份。

Using trusted contexts provides greater control while using restricted, sensitive privileges, and allows middle-tier servers or applications to assert the identity of the user to the database server.

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这样，安全性就比无论“来自”何种连接类型，应用程序的通用ID都拥有可享受的特权时高得多使安全得多。

This way, security is much tighter than it would be if the application's generic ID had privileges that could be exercised regardless of the "come from" connection type.

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