WEEK 3: USE CASE MODELING

Question 1

Know how to identify actors

+ Roles of actors

Answer 1

An actor represents a role. It is someone or something that interacts
with the system; sending or receiving messages to and from the system.

Label: singular noun or noun phrase reflecting the role of the actors

Roles of actors

-Initiate a use case (active actor-initiator)

Benefit from a use case- (passive actor/ receiver)

• Provides service to the use case (external server)
• faciliate a use case (facilitator)

Question 2

Types Relationship in Use case

Answer 2

• Initiate: represented by arrowhead from actor to a use case
• Communicate: represented by just a line connecting an actor and a use case
• Depends on:

Question 3

1. What is a CASE tool?

Answer 3

Computer-aided software engineering (CASE) is the domain of software tools used to design and implement applications

Question 4

Know how to develop a use case model given a narrative
description of a system

Answer 4

1. Identify business actors
2. Identify business requirements use cases
3. Construct use case model diagrams

Question 5

1. Similarities and differences between CASE and diagramming tools?

Answer 5

CASE TOOL: Allows for forward and backward engineering to help create softwares and help with technical analysis.

DIAGRAMMING TOOL: Helps to make diagrams and flowcharts and isn’t as technical or complex.