The invention relates to a role-based access control system, including a role definition system for defining roles to be sets of permissions on individual resources thus forming role instances, respectively; and a super role definition system for defining at least one super role by grouping a set of...http://www.google.co.uk/patents/US20060089932?utm_source=gb-gplus-sharePatent US20060089932 - Role-based access control system, method and computer program product