Database systems, such as Oracle and MySQL, manage their own user accounts, roles, and privileges for system and object-level operations.

诸如oracle和MySQL等数据库系统管理它们自己的用户帐户、角色和系统及对象级别的操作权限。

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The simplest approach to manage user names and passwords is to store everything in plaintext in a file or database.

最简单的方法来管理用户名和密码是明文存储在所有，在文件或数据库。

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The user can access and manage the electric document database running on UNIX server through the multi-document-interface.

用户通过客户端的多文档界面对运行于UNIX服务器上的电子文档数据库进行访问和管理。

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