该算法拓展了接纳控制的概念，考虑了客户请求优先级的内在属性。
The admission algorithm extends the concept of admission control to include the client priority.
权限传递约束提高了访问控制的粒度，使得访问控制的粒度能够达到元素或属性级。
The permission propagation constraint improves the access control grain. It makes the grain reach element or attribute level.
访问控制模块利用完整性锁结构实现元组级强制访问控制，利用SQL语句分析实现属性级强制访问控制。
The access control module of DSPS enforces tuple level MAC through Integrity lock and enforce attribute level MAC through SQL commands parsing and controlling.
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