Design diagram

Class Period

Writing

Design

In this lab you will our UML diagramming tool to create a system sequence diagram (SSD) for a use case in your project. The SSD is created using sequence diagram notation. You can use the SSD as an aid to help you team to design the interface with the end-user. As with the other UML labs, experience with modeling will be applicable to potential internships or careers.

N/A

Memo

Less than a week

Writing

Design

The purpose of this assignment is to further examine and compare two tools to support object design: Class diagrams and sequence (interaction) diagrams. When designing the classes (objects) we need to answer the following key questions:
• What software classes should we implement to produce the product?
• What are the responsibilities of each class (what are the attributes and methods)?
• How do the classes interact with one another and the actors?

Class diagrams and sequence diagrams are visual tools that help us to explore possible answers to the above design questions, and to document our decisions. Class and sequence diagrams are very commonly used design tools, so knowledge of these tools should be helpful to you in your future studies or career. In addition, the two diagrams model different aspects of the software, so the two diagrams are complementary.

In this memo to your supervisor you will summarize the purpose of static and dynamic models and give your own opinion on which type of model is most challenging and useful aid to software design.

N/A

Design diagram

Less than a week

Writing

Design

The purpose of this assignment is to introduce another modeling tool called the System Sequence Diagram (SSD). SSDs are a special case of UML sequence diagrams that illustrate the input and output events between actors and the system. Typically a SSD corresponds to one scenario from a Use Case. The SSD shows the interaction of the actor with the new system, so it is a bridge between conceptual design (analysis) and software design. In this assignment you will sketch a domain model, illustrating the real-world objects for one of your project use cases. Your supervisor will review the domain model and offer comments to help you to refine your understanding of the use case.

N/A