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Two Approaches to Interaction Modeling
publish date: 2026/06/08 06:26:23.470532 UTC
volume_muteThere are two related approaches to interaction modeling. Match each approach to its primary focus.
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Approach
Use case modeling
Sequence diagrams
Primary Focus
Modeling interactions between system components; external agents may also be included
Modeling interactions between a system and external agents — human users or other systems
Correct Answer
(1) Use case modeling,Modeling interactions between a system and external agents — human users or other systems
(2) Sequence diagrams,Modeling interactions between system components; external agents may also be included
Explanation
Use case modeling is mostly used to model interactions between a system and external agents (human users or other systems). Sequence diagrams are used to model interactions between system components, although external agents may also be included. The two approaches present interactions at different levels of detail and are used together — a high-level use case may be documented in a sequence diagram.
Reference
Software Engineering, Ian Sommerville, 9th edition