Communication Diagram and Operations Contract

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Define sequence diagram in UML. Draw seperate sequence diagram for each UCs in Question 1 and Question 2 of Assignment 1.
Question 2: Communication Diagram and Operations Contract
Describe the basic differences of communication diagram with sequence diagram. Using use case Start Line run, draw communication diagrams for operations getRunDetails and Write Operations contract for LineRun.start()
Question 3: Class diagram
Create a design class diagram from the seven interaction diagrams created in Question 1 and 2. Remember to show generalisation and inheritance classes. 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.

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