Database security integration using role-based access control

Abstract

Role-based access control provides very flexible mechanisms for managing access control in complex systems. The role graph model of Nyanchama and Osborn is one example of how role administration can be implemented. In previous research, we have shown how the access control information of existing systems can be mapped to a role graph. In this paper, we extend this research by showing how, when two systems are being integrated, their role graphs can also be integrated. © 2002 Kluwer Academic Publishers.