【摘要】 首先介绍了基于角色的存取控制技术的概念、基本原理和基本结构,然后针对当前几种主流的关系数据库产品讨论了RBAC的实现问题,比较了它们对RBAC的支持方式,最后总结了RBAC的一些特性和不足。更多还原

【Abstract】 This paper first introduces the concept,principle,and basic structure of RBAC,then discusses the implementation of RBAC aiming at current several mainstream commercial DBMS, compares their supports for RBAC,and finally summarizes the features and deficiencies of RBAC.更多还原