Subject:
Assignment - 3
Value: 20%
Due date: 19-Sep-2014
Return date: 10-Oct-2014
Submission method options
Alternative submission method
Task
Instructions:
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.
Rationale
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.
Marking criteria
The following marking sheet will be used to assess students' submissions. Please check that you have met all the criteria before you submit your assignment. The detail marking rubric will be supplied into the resources section of subject Interact site prior to the session -
No Criterion Max Possible
1 Understanding of sequence diagram and correctness of the diagram with rationale. 25
2 Comprehensive understanding of the concept of sequence & communication diagram and correctness of the diagram with rationale. 25
3 Correctness of the diagram. 15
4 Correct and concise description with rationale 15
Total marks 80
Total percentage of overall subject 20%