以基于角色的存取控制模型RBAC₃为基础,提出一种新的时态对象存取控制模型TRBAC,讨论了模型的构成要素,体系结构,时态多重继承机制和存取控制方法.它支持时态用户、时态角色和时态客体及其层次结构,具有动态存取控制功能,在时态数据库和工作流系统等领域会得到广泛应用.

A novel temporal object access control model (TRBAC) is proposed based on the role-based access control model (RBAC₃).The elements,architecture,temporal inherent mechanism and access control method of TRBAC are discussed respectively.It supports temporal user,temporal role and temporal object and their hierarchy structures,and has the dynamic access control power.It may have applications in such as temporal database and workflow management system.