  Semantic web technologies represent much richer forms of relationships among
users, resources and actions among different web applications such as clouding
computing. However, Semantic web applications pose new requirements for
security mechanisms especially in the access control models. This paper
addresses existing access control methods and presents a semantic based access
control model which considers semantic relations among different entities in
cloud computing environment. We have enriched the research for semantic web
technology with role-based access control that is able to be applied in the
field of medical information system or e-Healthcare system. This work shows how
the semantic web technology provides efficient solutions for the management of
complex and distributed data in heterogeneous systems, and it can be used in
the medical information systems as well.
