摘要
信息大都存放在数据库中,信息安全很大程度上依赖数据库的安全。推理是从已知的信息推出新的信息,它是对数据库安全的一个重要威胁,特别数据挖掘的发展,这个威胁变得更加严重。简单描述了多级安全数据库系统的推理问题;介绍了粗糙集理论的相关概念;利用粗糙集理论提出了一种对推理风险进行量化的方法,它不依赖系统安全员的知识,能够处理确定性和非确定性的推理通道;并给出了一个分析例子。
Since information is almost stored in database system, information security depends on database system security. Inference, which is to get new information from known information, threatens database system security. Especially with the progress of data mining, the problem is more serious. The inference for multi-level security database system and the concepts about Rough set are introduced. Moreover, an inference quantized analysis scheme of multi-level security database system based on rough set and an example are presented.
出处
《计算机科学》
CSCD
北大核心
2005年第8期75-76,共2页
Computer Science
