An introduction to OCL - the Object Constraints Language - through an example. The session also introduces the new MDriven debugger and shows how to get instant results from modeling efforts. This particular session explains the configuration of different operators, the concept of derivation, and the principles of various OCL association tools through a practical example. It is as clear and understandable as possible to learn or be taught with.

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This part includes overview on: code comments associations temporary variables introduction (temp operator) add operator at(0) operator derivation asCommaList operator if operator groupby operator sum operator add criteria to the grouping adding variables m1, m2, m3 collections Collection operators symmetric difference operator difference operator