Conceptual modelling is a technique which is essential for building enterprise information systems. The reason is not only because software systems have to be built, but also since domain specific requirements coming from the application area should be represented adequately. For this reason different modelling languages for data modelling, process modelling and systems modelling are developed. In this case study we deal with the fundamental conceptual modelling languages, like BPMN, EPC, ER,

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... L and Petri Nets. A tool support through Bee-Up is also given (www.omilab.org). This case study focuses on the domain of beekeeping throughout different areas, like the production of honey, bees in general and beekeepers (called Imker in German).