The domain is governed by two security structures: The user registry, such as LDAP, Lotus Domino, or Microsoft Active Directory, and a master authorization policy database.

这个域由两个安全结构主导：用户注册表（比如 LDAP、Lotus Domino 或 Microsoft Active Directory）和一个授权策略数据库。

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The hardware design of security policy database (SPD) and security association database (SAD) which are suitable for fast lookup.

适应快速查找需要的安全协议数据库(SPD)和安全关联数据库(SAD)的硬件结构设计。

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The security policy of security database management system provides the powerful security function to database. The model of BLP is one of common security policy model.

安全数据库管理系统的安全策略可以为数据库提供强大的安全功能，现在BLP模型是用得比较普遍的策略模型之一。

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For instance, a database administrator can mistakenly implement a security policy that affects all of users of the service but actually contravenes the policies or rules that some customers need to abide by (due to above-mentioned national or industry rules).

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