Web Application Modelling

Activity;

1. Draw a use case diagram for ATM.

2. On use case is 'withdraw money'. Write a use case descrition for this use case.

3. Examine Amazon's website (http://www.amazon.com) (or any other similar website) and write down textual descriptions for a number of the use cases. Ensure that the descriptions capture all of the functionality that is available to a user. Each member of your group should concentrate on one of the use cases.

• Construct a use case diagram. To develop your experience with case tools you might wish to use Rational Rose to present the model; however this is optional if you have the time.
• Discuss the use cases as a group and debate the validity of them. Also pay particular attention to the descriptions and whether or not these descriptions are complete. As a group, scrutinise the model and consider how you might improve it. Think about things such as:
• Does the site offer personalisation features?
• Does the site 'remember' users?
• What are the most likely uses of the site? How easy is it for the user to access these facilities?
• Are users required to 'register' and 'log-in'?