10 Questions
What do actors represent in a use case model?
Systems or persons outside the system boundary
How is the system boundary defined in a use case model?
It delimits the system from its environment
What is the purpose of the 'Include' relationship in a use case model?
Increase reusability
When is the 'Extend' relationship used in a use case model?
To model optional system behavior
What does 'Generalization' represent in a use case model?
'Special use case inherits interactions of a general use case'
What are the different types of relationships between actors and use cases in a use case model?
The different types of relationships between actors and use cases in a use case model are generalization, extend, and include.
How can the 'Extend' relationship be used in a use case model?
The 'Extend' relationship can be used to model optional system behavior, subflows executed under certain conditions, and sets of behavior segments that may be inserted in a base use case.
What is the purpose of the 'Include' relationship in a use case model?
The purpose of the 'Include' relationship in a use case model is to increase reusability by allowing one use case to include the interaction sequence from another use case.
When is the 'Extend' relationship used to model a situation in a use case model?
The 'Extend' relationship is used to model a situation where a part of a use case is optional system behavior, a subflow is executed only under certain conditions, or a set of behavior segments may be inserted in a base use case.
What are the interactions between actors and use cases expressed through in a use case model?
The interactions between actors and use cases are expressed through the generalization, extend, and include relationships in a use case model.
Test your knowledge of requirements specification and use case models, including actors, system boundaries, and relationships between actors and use cases such as generalization and extension.
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