What is an example of Navigability in UML diagrams? My professor has provided the follow figure, but I can't seem to figure it out:
UML 2.4 also provides another definition of navigability : An end property of association that is owned by an end class, or that is a navigable owned end of the association indicates that the association is navigable from the opposite ends; otherwise, the association is not navigable from the opposite ends.
This section describes the Association End Navigability Notation used in a UML Class Diagram. An Association End Navigability Notation specifies whether or not the instance of the connected class can be easily accessed through the related instance of the opposite class. © 2022 Dr. Herong Yang. All rights reserved.
Easy to Understand - Since different roles are interested in different aspects of the system, the UML diagram offers non-professional developers, for example, stakeholders, designers, or business researchers, a clear and expressive presentation of requirements, functions and processes of their system.
It would be a very long list in order to build those and write out all navigation rules. With UML, you can visually see how each one of these elements is connected. You could pick one and then traverse the line to see what items it can navigate. If it can navigate to it here it should be able to do that in the code.
The UML specs is an intricate pile of alternative notations that can drive you crazy. Explore with caution!
In real life, KEEP IT SIMPLE! Don't use "dot notation" and don't use x
to denote non-navigability, unless your peers are familiar with it.
Use arrows for navigable associations. People are familiar with it, or if not they're intuitive enough.
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