On Generalization and Overriding in UML 2 . 0

@inproceedings{Bttner2004OnGA,
  title={On Generalization and Overriding in UML 2 . 0},
  author={Fabian B{\"u}ttner and Martin Gogolla},
  year={2004}
}
In the upcoming Unified Modeling Language specification (UML 2.0), subclassing (i.e., generalization between classes) has a much more precise meaning with respect to overriding than it had in earlier UML versions. Although it is not expressed explicitly, UML 2.0 has a covariant overriding rule for methods, attributes, and associations. In this paper, we first precisely explain how overriding is defined in UML 2.0. We relate the UML approach to the way types are formalized in programming… CONTINUE READING

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