Abstract: Role-based access control (RBAC) is a safe and efficient access control mechanism, but the main settings for the operating minimum level of granularity of the role can only be achieved, resulting in lack of system flexibility and practicality. For this defect, the equipment management system, the first hierarchical permissions system division, the role of the implementation of the system hierarchy, the role of a subordinate role in setting higher authority, so that the minimum size to achieve a single operation of the main users of the authority that adopted the privilege characteristic value, reducing storage space access. After the actual use of the system to good effect.
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