Based on RBAC model, this paper introduces negative authorization into the user assignment and permission assignment, and discusses their realizing approaches and features.
本文在RBAC模型基础上，分别在用户分配和权限分配中引入了负授权，讨论了负授权的实现方式及其特点。
An identity-based authorization model is presented in this paper. It combined the identity authentication technique of PKI and the access control technique of RBAC.
从身份认证和访问控制入手，结合PKI和RBAC技术，提出了一种针对电子病历的基于身份的授权模型。
This paper analyzed the problems existing in administration of authorization in MIS and applied the RBAC in MIS, then presented a logic model of implementation.
文中分析了目前MIS实施中权限管理存在的问题，并将RBAC应用于管理信息系统中，给出了实现的逻辑模型。
Its fits the dynamic employee and organization structure. The model extends the traditional RBAC by incorporating thin granular permissions control and enough Constrains in authorization.
它符合目前多变的企业人员结构和组织结构，结合细粒度的权限划分和充分的授权约束，进一步对传统RBAC做出了扩展，满足动态访问控制的要求。
Its fits the dynamic employee and organization structure. The model extends the traditional RBAC by incorporating thin granular permissions control and enough Constrains in authorization.
它符合目前多变的企业人员结构和组织结构，结合细粒度的权限划分和充分的授权约束，进一步对传统RBAC做出了扩展，满足动态访问控制的要求。
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