Keywords: Model Transformation, Business Process Models
Astract: Owing to company mergers and business to business interoperability, there is a need for model transformation in the area of business process modeling to facilitate model integration and model synchronisation. This need arises, on one hand, from the fact that there are many different business process modeling formalisms, for example the ADONIS Standard Modeling Method , UML 2.1 Activity Diagram, Event-driven Process Chains Method, and, the Business Process Modeling Notation.
These formalisms provide different ways to express and represent the same aspects of business process modeling. On the other hand, existing model transformation approaches, like ATL, QVT, and Fujaba, use very general concepts for transforming models for different purposes.
However, recurring structures have been observed when transforming models in the area of business process modeling. This leads to the assumption, that there are similar transformation problems in a distinct area. These recurring structures, however, are only inadequately supported by existing transformation approaches.
This thesis analyzes the different ways of how business process modeling aspects are represented in various business process modeling formalisms.
Furthermore, existing transformation approaches are evaluated concerning their suitability for transforming models in the area of business process modeling. Based on this evaluation, special requirements and solutions for model transformations in the area of business process modeling are derived. These solutions lead to the construction of the Model Morphing approach, which consists of an integrated metamodel and morphing methods which operate based on this metamodel. The Model Morphing approach makes it possible to concentrate on the specific transformation problems within a distinct domain. Furthermore, it reuses existing model transformation approaches and reduces the need for excellent programming skills when defining model transformations.

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Astract: Model transformations are playing a vital role in the field of model engineering. However, for non-trivial transformation issues most approaches require imperative definitions, which are cumbersome and error-prone to create. Therefore, Model Transformation By Example (MTBE) approaches have been proposed as user-friendly alternative that simplifies the definition of model transformations. Up to now, MTBE approaches have been applied to structural models, only. In this work we apply MTBE to the domain of business process modeling languages, i.e., Event-driven Process Chains and UML activity diagrams. Compared to structural languages, business process modeling languages cover static semantic constraints, which are not specified in the metamodel. As a consequence, reasoning on the abstract syntax level is not sufficient. The contribution of this paper is to extend our existing MTBE approach by new alignment operators on the user level, which further improves the transparency of model transformation code. Concrete syntax and the knowledge about mapping operators are to be the only requisite artifacts.

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Astract: Not least due to the widespread use of meta modeling concepts, model transformation techniques have reached a certain level of maturity (Czarnecki and Helsen, 2006). Nevertheless, defining transformations in some application areas in our case business process modeling is still a challenge because current transformation languages provide general solutions but do not support issues specific to a distinct area. We aim at providing generic solutions for model transformation problems distinct to the area of horizontal business process model transformations. As a first step in this endeavor, this work reports on the most pressing problems encountered at defining business process model transformations.

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Astract: Due to company mergers, acquisition and business to business interoperability, there is a need for model transformations in the area of business process modeling to facilitate scenarios like model translation, integration and synchronization. Thus this paper concentrates on transformations of models between different business process modeling languages. As current transformation languages provide general solutions and do not support the special properties of business process models, it is still a challenge defining such transformations. To tackle this problem we introduce the model morphing approach. Our main idea is to create an integrated metamodel containing all concepts of the languages of a given domain. Based on this integration the model transformation can be defined in terms of morphing steps. Our approach is demonstrated by model transformation in the area of business process modeling but is generally suitable for domains in which a variety of languages is used that express similar concepts.

Keywords:
Astract: Due to company mergers and business to business interoperability, there is a need for model transformations in the area of business process modeling to facilitate scenarios like model integration and model synchronization. General model transformation approaches do not consider the special properties of business process models and horizontal transformation scenarios. Therefore, we propose a model transformation approach based on domainspecific patterns which are applied for analyzing business process models in a precise way. This approach facilitates the definition of business process model transformations, which can be easily adapted to different business process modeling languages and specific transformation problems. At the same time it supports the intuitive understanding of the domainexperts in business process modeling.