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This assignment uses the Football Tipping Case Study contained in a separate document. Carefully read the 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: Sequence Diagram

Define sequence diagram in UML. Draw sequence diagram using the ‘use case 1’ for operations 1,2,3 and 4.

Question 2 Communication Diagram

Describe the basic differences of communication diagram with sequence diagram. Using ‘use case 1’ draw communication diagrams for operations 5,6 and 7.

Question 3. Class diagram

Create a design class diagram from the seven interaction diagrams created in Question1 and 2. Only show class diagram features that can be derived from the objects shown in your diagrams.

Question 4. Discuss Grasp Patterns

Discuss the following Grasp patterns that have been used to construct the interaction diagrams in your solution -

  • Expert
  • Creator
  • Low Coupling
  • High Cohesion
  • Controller

Discuss one good application of the pattern from the interaction diagrams under a heading for each pattern. Submit your discussion with the pattern heading, followed by your 3 – 5 lines of discussion.


This assignment is assesses your object modelling concept and understanding of the design techniques and processes contained in this subject. It 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:

- create class diagrams and dynamic models (sequence, collaboration, state and activity diagrams) with UML notation
- compare the syntax, semantics and pragmatics of UML.
- design the system design with different design patterns; and
- perform modelling of various aspects of systems of a quality that would make it useful in a system development project.

Question Set #60

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