]> 2007-01-07T00:00:00-05:00 We describe a policy based mechanism to determine access control for an RDF store. RAP is a prototype implementation of an RDF store with integrated maintenance capabilities and access control using user defined policies. All actions to the store are routed through RAP policy engine, to determine whether the action is permitted or prohibited. In the RAP framework, the same RDF store is also used to store the policy, as well as metadata about the triples, allowing greater range in policy specification.]]> 1145 RU-W8NvOKTQJ 12 177545 460800