Introduced the outer role, inner role and basic role, the model can not only realize Discretionary Access Control but also the Mandatory Access Control. In addition, it can facilitate the management.

引入了外部角色、内部角色和基本角色，使得该模型可以同时实现自主访问控制和强制访问控制，而且也方便了管理。

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Firstly introduced the basic conception and model of RBAC96, then according to the real demand of the office automation system, putted forward the access control model.

介绍RBAC96的基本概念和模型，结合办公自动化系统中实际的需求，提出自己的访问控制模式。

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This paper analyzes the characteristics of Spacecraft Fault Diagnosis System and the basic idea and principle of Role-Based Access Control model.

文章介绍了基于角色的权限管理模型的基本思想及工作原理，并分析了航天器故障诊断系统中权限管理的特征。

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