Trusted Database Interoperation Based on Collaborative Role-Based Access Control

The increasing development of distributed application has led to the widespread involvement of database interconnection. Information sharing through the interconnection requires a new type of access control beyond local-only access control scheme: we need to consider the relationship among organizations and a collaborative application. In this paper, we describe an access control framework for the trusted database interoperation based on the collaborative role-based access control model. The cooperation is realized by the construction of virtual role hierarchy for the collaborative application extending the conventional role based access control model. The policy mediator for the application achieves the integration of heterogeneous local datasources which may be under different security policies.