CSP - there is more than one way to model it.
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In this paper, we present an approach for conceptual modelling of con- straint satisfaction problems (CSP). The main objective is to achieve a similarly high degree of modelling support for constraint problems as it is already available in other disciplines. The approach uses diagrams as operational basis for the development of CSP models. To facilitate a broader scope, the use of available mainstream modelling languages is adapted. In particular, the structural aspects of the problem are visually expressed in UML, complemented by a textual representation of rela- tions and constraints in OCL. A case study illustrates the expositions and deployment of the approach.