The research for spatial role-based access control model

The Spatial Role-Based Access Control (SRBAC) model was discussed in this paper. Firstly, the formal definition of SRBAC Model was given; then the region coverage constraint of spatial object, duration constraint of spatial object, various spatial object separations of duty constraints and spatial object cardinality constraint of role activation were researched; after extending the traditional session, the strategy of eliminating the conflictive session was presented; Finally, the role hierarchy has been discussed under the spatial environment. Combined with practical application, the theory of secure DBMS was optimized and afforded to build the stricter system.