This paper analyzes the security mechanism of SYBASE database management system and the model of Role-based Access Control.

文章分析了SYBASE数据库管理系统的安全控制机制和基于角色的数据访问控制模型。

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A novel method for designing and implementing database safe access control in a statistic management system is proposed on the basis of analyzing RBAC model.

通过分析r BAC模型结构，提出并设计实现了统计管理系统中数据库安全访问控制的新方法。

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Those include functional modules, related data structure, frames of message encoding, certificate management database, ring of keys, concrete information flows for access control and so on.

完整设计了模型的整个可实现框架：包括各组成模块的功能、相关数据结构和消息编码格式、证书管理库和密钥环的设计，以及具体的访问控制流程等。

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