Describing Modeling Deltas by Model Transformation

Since large scaled software models typically exist in many revisions, extraction and representation of differences between versions is a crucial issue of model version systems. While handling model differences is playing an important role in evolution of models, there is a need for appropriate techniques to represent model differences. This paper shows a meta-model-generic and transformation based approach to the representation of model differences. Domain specific languages are generated to represent model differences. Differences are mapped to a set of model transformation rules. To demonstrate the approach, it is applied to activity diagrams.