Visual Specification of Systems with Heterogeneous Coordination Models 1

In this paper a prototype of a visual specification language called Visual Coordination Diagrams (VCD) for high-level design of concurrent systems with heterogeneous coordination models is presented. The key property of VCD is the separation of behavioral aspects from coordination aspects. We also highlight the heterogeneity of VCD which has two levels. At first, it allows different coordination models to be mixed in a particular specification. Secondly, different formalisms can be incorporated to VCD for specification of behavioral aspects. This paper contains an overview of the language followed with its formal definition. An example of using the language is also given.