数据库安全管理员对角色从属关系有严密的控制。

The database security administrator has tight control on the role membership.

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其中许多安全性方面对于数据库管理员是已知的。

Many of these security aspects are known to a database administrator.

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其中许多安全性方面对于数据库管理员是已知的。

Many of these security aspects are known to a database administrator.

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