Complete the sentence to define a use case diagram.
A use case diagram shows [1] and their interactions with the system.
A use case diagram visually represents actors (users or other systems) and how they interact with the system.
Complete the sentence to describe the purpose of use case diagrams.
Use case diagrams help to [1] the system's functional requirements.
Use case diagrams visualize how users interact with the system to fulfill requirements.
Fix the error in the sentence about use case diagrams.
Use case diagrams show [1] and their methods.
Use case diagrams show actors and their interactions, not methods which belong to classes.
Fill both blanks to complete the description of use case diagram elements.
In a use case diagram, [1] represent users or external systems, and [2] represent the actions they perform.
Actors are users or external systems interacting with the system, and use cases are the actions or services they perform.
Fill all three blanks to complete the sentence about use case diagram relationships.
The [1] relationship shows that one use case is a specialized version of another, the [2] relationship shows required behavior, and the [3] relationship connects actors to use cases.
Generalization means one use case is a specialized form of another. Include shows required behavior included in a use case. Association connects actors to use cases.