GIS中基于角色的图元授权粒度控制研究
Role-based Geographic Entities' Authorized Granularity Control in GIS
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摘要: 对深入到图元的细粒度控制进行了研究,分析了图元授权粒度需要考虑的各个方面,在RBAC理论基础上,对该控制做了全面而细致的设计。实践证明,GIS应用系统中基于角色的图元授权粒度控制对具体工作单位的运作具有真正意义上的实用性。Abstract: This paper gives an analysis of several aspects which should be considered in controlling entities, and makes a thorough and careful design of entities' authorized granularity control based on the theory of RBAC.The practice has proved that the research of role-based geographic entities authorized granularity control in GIS is really practicable.