This policy defines the rule to delete the files from the system depending on various file attributes like access time, modified time, file name, path, owner, and so on.

该策略定义了从系统中删除文件的规则，可根据访问时间、修改时间、文件名、路径、所有者等文件属性对系统中的文件进行删除。

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Finally, data access typically implements pure CRUD (Create, Read, Update, Delete) a where as enterprise services implement business meaningful interface, like rate policy, etc.

最后，数据存取一般实现纯的CRUD(创建、读取、更新、删除)a功能，作为对企业服务实现业务有意义的接口，比如费率策略等。

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