Simplifying Use Cases - Extend - Extension Points
8 important questions on Simplifying Use Cases - Extend - Extension Points
There exists additional notation that helps in identifying when and where to insert the extension.
What is this additional notation?
We use the standard constraint notation, a note symbol, with the label “condition.”
What are extension points?
These are locations where the extension can be inserted if the condition is true.
UML doesn’t have a standard way of identifying these list of locations.
But what is commonly of naming these list of locations?
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What does UML says about the use of extension points?
Both the extension points and condition are optional.
You can use neither, either, or both.
What does a condition mean in a use case diagram?
What is an alternative format for the Use Case and extension points?
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When is it useful to use the Classifier Rectangle?
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What does the oval in the upper right mean?
The compartment name is “extension points.”
The question on the page originate from the summary of the following study material:
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