014-higher_lower/docs/use-case-diagram.md

Use Case Diagram

Metadata

Key	Value
ID	UCD-001
CrossReference	SA-001, BC-001, US-001, UC-001, RC-007

Version History

Date	Status	Author	Reviewer	Change	Commit
2026-10-04	Deprecated	Jens Tirsvad Nielsen	S01	Initial version	923dde7
2026-10-04	Accepted	Jens Tirsvad Nielsen	S01	Accepted after review RC-007	c7164fe

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Purpose and Scope

The system boundary is the Higher Lower console game. One actor, the Player, uses it to play a game. Traces to BC-001 objective O1 and to stakeholders S01 and S02 (SA-001), who play the game; S03 only reads the repository.

Diagram

@startuml
left to right direction
actor Player <<Actor>>
rectangle "Higher Lower <<System>>" {
  usecase "Play a Game" as PlayAGame
}
Player --> PlayAGame
@enduml

Actor Table

Actor	Stereotype	Stakeholder ID (SA)	Goals (use cases)
Player	Actor	S01, S02	Play a Game

Use Case Table

Use Case	Actor(s)	Goal
Play a Game (UC-001)	Player	Guess, round after round, which of two accounts has more followers, and see the final score

Relationships

None: there is a single use case, so no <<include>> or <<extend>> is used.

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