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What are VPM/VTML relation multiplicities and how can I use them?

April 26, 2017multiplicities relation vpm vtml

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What are VPM/VTML relation multiplicities and how can I use them?

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In the case of VPM/VTML, relation multiplicites are only markers, which means that the VIATRA modelspace does not enforce their validity but only reports if they do not hold. The reason for this is that (temporarily) inconsistent states must be allowed in order to allow model manipulation (either by the user or by a transformation).