Abstract
The Reference Model for Open Distributed Processing (RM-ODP) defines a framework within which support of distribution, interoperability and portability can be integrated. However other ODP standards have to be defined. We treat in this paper the need for formal notation for concepts in the computational language. Indeed, the ODP viewpoint languages are abstract in the sense that they define what concepts should be supported not how these concepts should be represented. Using the denotational semantics in the context of UML we define in this paper syntax and semantics for core ODP structural concepts defined in the RM-ODP foundations part and in the computational language namely object action, computational object, and computational interface. These specification concepts are suitable for describing and constraining ODP computational viewpoint specifications.
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