Supporting multiple access control policies in database systems
SP'96 Proceedings of the 1996 IEEE conference on Security and privacy
Privacy in the electronic society
ICISS'06 Proceedings of the Second international conference on Information Systems Security
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A method of treating several unspecified policies is presented. Precise notions of policy combination, policy conflict, conflict resolution, and policy precedence are introduced. Necessary and sufficient conditions for policies to be combined without conflict are established.