复合通道 meaning in English

master

Second , discussing the detecting and eliminating of inference channel , different channel detecting methord are provided according to static , dynamic and compositional channel , and a new algorithm of eliminating the inference channel by promoting security was presented . third , discussing many problems encountered by transaction , which is from single - level to multilevel , and a transaction schedule algorithm is given based on data replicated architecture . according to the theory mentioned above , a mls / dbms is developed , and the experiment result has showed the correctness of the theory
本文围绕安全数据模型,多级安全环境下的事务处理,推理控制展开了探讨,首先针对空值的二义性和数据穿越问题,提出一种改进的多实例安全模型,并对外键引起的存储隐通道进行了控制,提高了查询的效率;其次探讨推理通道的检测和排除问题,针对静态、动态推理通道和复合通道分别给出了不同的通道检测方法,并提出一种通过提高输入安全密级来消除推理通道的算法;最后讨论了事务从单级拓展到多级所面临的各种难题,提出了一种基于数据复制结构的事务调度算法。