Graph-Grammar Based Completion and Transformation of SDL / UML-Diagrams Position Paper

In the last years the Unified Modelling Language has become more and more popular . It has been successfully applied in man y pplication domains. Thus, man y effort is put into the extension of the UML in order to mak e it applicable in formerly untypical domains. One example is the de velopment of UML-RT [SGW94]. UML-RT extents the UML by adding the possibility of defining the communication structure of a distrib uted system. Unfortunately, it lacks of the definition of a precise semantics. Moreo ver, often there are other graphical specification techniques which are commonly used. In the domain of communication engineering, the Specification and Description Language (SDL) [SDL96] has emerged to a standard. Additionally , the semantics of SDL is formally defined.