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I'm not sure that I understood your question... That said, lemme try to help you. I undestand the model represents the categorization of 'parties' as begin part of 'segments'. These categorizations are mutable and have to be traceable in time. Let me humbly present what I think is a more complete LDM, where PARTY is explicited Segment Group Cd is ...


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It means that time is an essential component of the relationship. It's telling you that there's a functional dependency (employee, time) -> project. In an entity-relationship diagram, I might model it like so: I made it a weak entity dependent on Employee and with time as a weak key, but it's still a relationship between Employee and Project, hence a ...



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