3.2. UML-F tags – standard UML tagged values and stereotypes unified
If UML did not provide built-in extension mechanisms, then it would be necessary to include countless additional concepts to the core UML in order to satisfy various requirements imposed on UML. This would result in a UML even more complex than the current standard, which might well render it useless in practice.
Let us roughly compare UML, which is a software modeling language assisted by computer tools, with an ordinary programming language. An ordinary programming language defines a small set of core concepts, and libraries provide additional functionality. The most important feature of a programming language is the ability for a programmer to extend its vocabulary, and therefore ...
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