RBAC访问控制介绍，详细介绍了RBAC的背景(历史、作者、RBAC标准)、引用模型(基本模型RBAC0，层次模型RBAC1，约束模型RBAC2)、需求规范、实现及实际使用中应注意的问题。可以作为RBAC入门教程。-RBAC access control descr iption, details of the RBAC context (history, author, RBAC standard), the reference model (basic model RBAC0, hierarchical model RBAC1, constraint model RBAC2), requirements specification, implementation and actual use should pay attention to. RBAC can be used as introductory tutorial.