![]() It all depends on what you want to communicate with the diagram. So in summary: there is no UML-imposed right answer. So it's closest to capturing everything in the ERD. It denotes both PKs ('Identifiers'} and FKs ('referential attributes'} directly on the class diagram. There are altogether 27 lectures throughout the training with more than 5-hour quality videos with user-friendly contents. If that meets your modelling needs then you're done.Īs a second refinement, you could tag the PK attributes with an ocl isUnique() constraint, again ignoring the FKs.Īnother option would be to use the rules of Executable UML. Visual Paradigm Essential is an introductory course that is tailor-made for software development teams who want to design and build high quality software with Visual Paradigm. list PK attributes as normal attributes.UML follows the OO idiom that every object has implicit identity - therefore you don't need to specify it explicitly. you're not code generating from it) then you should use UML to expose the information you're trying to communicate.Īs a general standard UML says nothing about how you formalise identity (PK/FK). On the assumption the diagram is for human consumption only (i.e. First off: why do you want to draw it in UML? If you already have an ERD, what additional/alternate property do you want to illustrate with a UML class diagram that the ERD doesn't give you?
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