Use Case Models and Actors in Requirements Specification

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What do actors represent in a use case model?

Systems or persons outside the system boundary (correct)
Special use case inherits interactions of a general use case
Interactions with the system in a use case
System functionality

How is the system boundary defined in a use case model?

It represents system functionality
It includes interaction sequence from another use case
It delimits the system from its environment (correct)
It inherits interactions of a general use case

What is the purpose of the 'Include' relationship in a use case model?

Increase reusability (correct)
Represents system functionality
Inherits interactions of a general use case
Delimit the system from its environment

When is the 'Extend' relationship used in a use case model?

To model optional system behavior (D) Signup and view all the answers

What does 'Generalization' represent in a use case model?

'Special use case inherits interactions of a general use case' (D) Signup and view all the answers

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. Signup and view all the answers

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. Signup and view all the answers

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. Signup and view all the answers

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. Signup and view all the answers

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. Signup and view all the answers