借助这个特性，数据管理员可以在表的列和行级别控制用户和组的读写访问。

Using this feature, data stewards can control read and write access for users and groups at the table column and row level.

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维度表设计是使得用户轻松跨越数据，实现钻入和钻出，来了解在不同级别将要发生什么的必要部分。

Dimension table design is an essential part of enabling users to move easily through the data, drilling in and out to see what is going on at different levels.

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正如您可以看到的，允许您指定使用数据库中的哪个表来进行身份验证，并允许您指定登录用户的访问级别(accesslevel字段)。

As you can see, this lets you specify which table in our database is used for authentication and the access level of the logged in user (the AccessLevel field).

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