USE CASE DESCRIPTIONS
E X P L A I N E D I N D E TA I L
, What is a use case?
Use Case Diagram Symbo
• A user makes a request.
• The system responds to the
user request.
• A response by the system
to a request made by the Basics of Use Cases
user.
• Always name with: Verb-
Noun
Types of events
• External Event: Will occur outside the system
• State Event: Event will only occur when a
particular condition is met.
• Temporal Event: Event will only occur when a
particular time constraint is met.
E X P L A I N E D I N D E TA I L
, What is a use case?
Use Case Diagram Symbo
• A user makes a request.
• The system responds to the
user request.
• A response by the system
to a request made by the Basics of Use Cases
user.
• Always name with: Verb-
Noun
Types of events
• External Event: Will occur outside the system
• State Event: Event will only occur when a
particular condition is met.
• Temporal Event: Event will only occur when a
particular time constraint is met.
