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Model Driven Software Development (MDSD) has matured over the last few years and is now becoming an established technology. As a consequence, dealing with evolving meta-models and the necessary migration activities of instances of this meta-model is becoming increasingly important. Approaches from database schema migration tackle a similar problem, but cannot be adapted easily to MDSD. This paper presents work towards a solution in the model-driven domain. Firstly, the authors introduce a process model, which defines the necessary steps to migrate model instances upon an evolving meta-model. Secondly, they have created an initial classification of metamodel changes in EMF/Ecore utilised by their process model.
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