And, the expanded RBAC model-ERBAC model and the formal description are given.
给出了扩展的RBAC模型—ERBAC模型，并给出了其形式化描述。
ERBAC model is composed of three parts: system component, database and human-machine interface.
ERBAC模型的实现主要包括系统组件、数据库和人机界面三部分。
It also combines dispatching business in public traffic enterprises and RBAC model, localized the latter one, and then put forward the ERBAC model which meets the systematic demand.
将公交企业具体的调度业务与RBAC模型思想结合，对RBAC模型进行了本地化改造，提出了适合系统需求的ERBAC模型。
It also combines dispatching business in public traffic enterprises and RBAC model, localized the latter one, and then put forward the ERBAC model which meets the systematic demand.
将公交企业具体的调度业务与RBAC模型思想结合，对RBAC模型进行了本地化改造，提出了适合系统需求的ERBAC模型。
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