Integrating Formal Description Techniques

Using graphical description techniques for formal system development has become a common approach in many tools. Often multiple description techniques are used to represent different views of the same system, only together forming a complete specification. Here, the question of the integration of those description techniques and views becomes a major issue, raising questions of consistency and completeness. In this paper, we present an approach to ensuring conceptual and semantic consistency, influenced by experience gained from a first implementation of the AUTOFOCUS tool prototype. Finally, we show how this approach forms the basis for the definition of specification modules.