多级安全数据库体系结构及其策略模型的研究

On MLS-DBMS architecture and policy model

通过对现有多级安全数据库体系结构和策略模型的研究,分析它们各自存在的不足,给出了一个基于核心化体系结构的MLS-DBMS体系结构,并在现有策略模型的基础上,提出了一个基于扩展安全级的安全模型.该安全模型增加了策略模型的灵活性,提高了数据库系统的安全性和可用性.

By the study of the present multilevel secure DBMS architectures and their policy models, and the analysis of their shortages, this paper presents an improved MLS-DBMS structure based on the kernelled architecture. On the basis of current policy models, an extended security level security model is given. The model not only improves its flexibility but also enhances the security and usability of the system.