Task 1: 40 marks
Define the term ‘use case’ and explain the various types of actors in a Use Case.
Explain the difference between the include and extends relationships in use case diagrams? Give examples
Describe with examples ‘encapsulation’, ‘information hiding’, ‘polymorphism’ and ‘data abstraction’.
What is the difference between USDP and the Waterfall lifecycles in the relationship of between activities and phases?
Explain Class diagram. Outline the main steps in developing a class diagram for a Use Case(UC).
Task 2: 60 marks
Task-2 of this assignment uses the Case Study based on an Interview contained in a separate document (Please see the details in page 221 of your text book). Carefully read this case study. You are required to answer the following questions based on the Case Study.

It is expected that answers to the assignment questions be succinct and MUST be written your own
words.

Question 1: (20 marks)

Describe UCs and write full use case description for the following UCs:
Start line run
Record employee joining the line
Record employee leaving the line
Stop line

Question 2: Communication diagram ( 20 marks)

Prepare a communication diagram for each of the UC in Q1 and also include justification of the objects included in the diagram(s).

Question 3: Class Diagram (20 marks)

Draw a class diagram based on the information supplied in the case study and the communication diagrams drawn in Question 2.

Online submission via Turnitin is required for this assignment.

Rationale
This assessment task covers the fundamentals concepts of object modelling, activities of SDLC, use cases, dynamic models and has been designed to ensure that you are engaging with the subject content on a regular basis. More specifically it seeks to assess your ability to:
Introduction to Information System (IS) and the challenges in developing IS
IS life cycles, methodologies and development tools
Object orientation and modelling concepts
Requirements analysis and Use Case (UC)
Requirements model and object interaction