摘要： 安全数据库管理系统的安全策略可以为数据库提供强大的安全功能,现在BLP模型是用得比较普遍的策略模型之一。为了适应BLP模型,采用一种实用的多级关系模型作为安全数据库的基础,这是原有关系模型的扩展。该文描述了多级关系模型的原理和内容,特别对多级关系模型的分解与合并做了详细的阐述。并说明了这个模型适合于在多级安全操作系统上实现多级数据库管理系统。

关键词: 安全数据库, BLP模型, 多级关系模型

Abstract: The security policy of security database management system provides the powerful security function to database. The model of BLP is one of common security policy model. In makes an applied multi-level relation model to be basement of security database for following the BLP model. The model is extension of former relation model. The thesis discusses the fundament and detail of multi-level relation and focuses on breaking down and union of the relation. The model is applicable for implementing multi-level database management system based on multi-level security operating system.

中图分类号: 

• TP311.132