Abstract: Methods and apparatus, including computer program products, related to relationship-based authorization. In general, data characterizing a request for authorization to a computer-based resource is received, and the authorization may be provided based on one or more relationships of a requesting principal. A determination may be made as to whether a requesting principal is authorized, which may include determining whether the requesting user has a relationship with a principal that has management rights of the computer-based resource and determining whether the relationship allows for an access, such as a use of the computer-based resource, if the requesting principal has a relationship with the other principal. If there is no such relationship, a determination may be made as to whether an organization of the requesting principal has a relationship with the other principal that allows for the access.

Abstract: Methods and apparatus, including computer program products, related to managing specification, enforcement, or auditing of electronic health information use. In general, data characterizing a request to modify access rights to health information is received and the access rights are modified in accordance with the request, where the modifying includes modifying a property characterizing access rights of a relationship between a first user and second users, or an organization of the second users. The access rights may be independent of the health information and modification of access rights may be independent of a security of the health information.