根据访问控制模型,按照主机角色及其特点、主机角色间的关系和访问控制策略库(Access Control Base,ACB),设计了XML文档分组加密算法,产生密钥对照表,进行密钥分配与管理,将依据一个或多个密钥对XML文档...
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多级安全数据库的安全策略需要各种模型来表达，访问控制模型是其中之一。
Security policy of multilevel security DBMS is expressed by many models. One of them is access control model.
访问控制策略即保证数据库的访问者其身份的合法性。
Access control security strategy is to preserve the legality of the database users.
数据库系统的安全性主要包括两个方面：访问控制策略和传输通道安全。
There are two aspects included in database system security, which is access control security strategy and communication channel security.
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