【摘要】 针对RBAC模型存在的两大问题—访问权限粒度与角色规模的矛盾和角色被动、缺乏灵活的授权机制,提出基于动态任务菜单的RBAC-DTM_RBAC模型,引入动态菜单和任务的概念,通过对角色的静态约束和任务的动态权限管理,很好地克服了角色冗余的问题,减少角色规模,降低角色管理的复杂性,更好适应多级复杂权限系统的动态权限管理要求。更多还原

【Abstract】 Aims at the two problems of RBAC model.first,the antinomy between the granularity of accessing_power and the size of the role.second,the authorization mechanism of role is lacking.so to table the RBAC model based on dynamic task menu.Introduce into the task and the dynamic menu,by the statistic constraints to role and dynamic permission manage to task,the proposed model achieves the separation of permission with users in the work flow,which solved the problem of role redundancy and reduced the size of the role and lowered the complexity of role management.更多还原