]> 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 the 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 a greater range in policy specification.]]> 8569 RU-W8NvOKTQJ 34 177545 615697