Unit 8(1)

Question 1

Use case modelling

Answer 1

Visual representation and narrative description of behavioural requirements
-Activities that the system must perform to carry out/support system processes

Question 2

Operational view of the system

Answer 2

-Depicts behaviour of the system as it appears to an outside user>outwardly visible and testable system behaviour
-Used to document work flow of business process activities

Question 3

A use case represents

Answer 3

-A complete unit of functionality(main flow of logic)
-A function that is outwardly visible to an actor(user)
-A piece of functionality initiated by an actor(user)
-A piece of functionality of value to an actor(user)

Question 4

Use case diagram

Answer 4

During analysis a use case diagram focuses on what an existing a new system does, as opposed to how the system works

Question 5

Boundary

Answer 5

-Automated system boundary
-Denotes the boundary
-Between the environment, where the actors reside,and the internal functions of the automated system

Question 6

Actors

Answer 6

-Actors are ‘external of the system’, they interact with the system from outside
-Actors are active, may initiate,control,input or receive information from the system

Question 7

Use case

Answer 7

Is a sequence of actions a system performs that yields an observable result to a particular actor

Question 8

Steps to develop a UC model

Answer 8

1. Develop an event table(optional)
2. Identify business actors
3. Identify business requirements use cases
4. Construct use case model diagram