gwagner's blog

Why are associations so difficult to understand, not just for developers?

gwagner's picture

Class diagram with a chair association between classes Committee and ClubMemberIn summary, the answer to this question is: because unlike the general concept of an object type or class, the general concept of an association, as defined by UML, does not have a direct computational counterpart, neither in common object-oriented (OO) programming languages, nor in SQL.


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