摘要
以GIS协同工作应用为背景,探讨了该背景下的访问控制问题,提出了一种基于角色和任务的层次对象访问控制模型,定义了受控对象层次关系和操作类型层次关系,以及基于这两种关系的权限定义规则。实验证明,该模型具有较强的灵活性和适用性,在一定程度上降低了权限定义的复杂度。
An improved task-role-based access control model (X-TRBAC) for GIS-based computer supported cooperative work (G-CSCW) systems is presented. Two concepts are introduced: object hierarchy and operation hierarchy. On the basis two concepts, the rules for defining permissions is proposed. The experiments show that the method can simplify the definition of permissions, and it is more applicable for G-CSCW applications.
出处
《武汉大学学报(信息科学版)》
EI
CSCD
北大核心
2006年第8期716-719,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(40171076
40337055)