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The '+1' in Krutchen's 4+1 Model
publish date: 2026/06/10 09:23:16.437444 UTC
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In Krutchen's 4+1 view model, what does the '+1' refer to?
Correct Answer
Use cases or scenarios that relate the four fundamental views to each other
Explanation
In Krutchen's 4+1 view model, the four fundamental views (logical, process, development, physical) are related using use cases or scenarios — the '+1'. These scenarios help validate and connect the different views by showing how the system behaves in specific situations.
Reference
Software Engineering, Ian Sommerville, 10th edition