Intro to Use Cases

Question 1

Statement of scope

Answer 1

a short concise statement of the primary function of the system
being developed that has what is and isn’t included

Question 2

A use case

Answer 2

describes how the primary actor interacts with a system or organisation to achieve a goal

Question 3

scope (not statement of scope)

Answer 3

the machine used in a use case

Question 4

Use case structure…

Answer 4

primary actor, goal, scope, main sequence

Question 5

Primary actor

Answer 5

the stakeholder/user who or which
initiates an interaction with the system in order to achieve a goal

Question 6

Goal

Answer 6

what the actor wants to achieve in
interacting with the system

Question 7

Main sequence

Answer 7

sequence of steps or events that
occur in a case where nothing goes wrong

Question 8

Business use case

Answer 8

interaction between
company and client/partner

Question 9

System use case

Answer 9

interaction between
computer system and user

Question 10

A casual use case….

Answer 10

must have a primary actor, goal, scope and main sequence

Question 11

A fully dressed use case includes more detail such as….

Answer 11

supporting actors, stakeholders, trigger, preconditions, guarantees

Question 12

Stakeholder

Answer 12

something or someone with a vested interest (stake) in the behaviour or outcome of the use case

Question 13

Trigger

Answer 13

the event that initiates the use case

Question 14

Pre-conditions

Answer 14

what must be true before the use case can occur

Question 15

Guarantees (or Postcondition)

Answer 15

the outcome, what must be true after the use case has occurred

Question 16

Primary actor vs Stakeholder

Answer 16

Primary actors interact directly with the system. Stakeholders don’t necessarily interact directly but are still involved. All actors are stakeholders, but not all stakeholders are actors