The concurrent transaction logic was described by the extended predicate task model and the dynamic constraint relations among the subtasks was found out by analyzing the concurrent executive net of subtasks.
采用扩展谓词任务模型描述并发事务逻辑,在基于子任务的并发执行活动网络模型上分析出各个子任务之间的动态约束关系,从而在传统RBAC模型基础上扩展了动态的角色约束关系。
After network packet transition and capture mechanism is studied,two different predicate filter model ar.
在剖析数据包传输捕获机制的基础之上,详细分析了两种不同的谓词过滤模型的原理及操作过程,并对工作效率进行了对比分析,得出了可控制流图模型总体上优于过滤树模型的结论。
