Lab 8: Sequence Diagrams

In this lab, you will create a sequence diagram to model an interaction

Objectives:

• To work with sequence diagrams
• To use RSM to create a sequence diagram

Steps:

1. Please review the Lab Zero problem-statement scenario.

2. Your job is to create a sequence diagram for requirement #1 -- import duty. Here is some additional information:

   Write a sequence diagram that shows a Buyer adding a car to inventory and paying duty using the Treasury Department's automated online system. If the car's price is over $100,000, also pay a luxury tax of 5%.

   Here are the artifacts that you should create:

   • A sketched sequence diagram drawn on a piece of paper OR
   • A sequence diagram created in RSM in a new UML Project named Lab08 with a Blank Model named lab08model.emx.

3. Here are some RSM hints:

   If you did Lab 6 in RSM, you can copy the model from that lab to the new Lab08 model so you have a starting point. Follow this procedure:

   1. If you have not already done so, create a new UML Project named Lab08 with a Blank Model named lab08model.emx.

   2. In the Model Explorer, double-click on lab06model.emx to open it.

   3. Use a shift-click or control-click technique to select and highlight the class diagram and all of the model elements except for UML2, then right-click on the selection and choose Copy.

   4. Click on lab08model in the new project and choose Paste.

      Note: A bug in RSM may exhibit itself here such that not all of the elements are copied. If so, repeat the copy and paste to get the remaining elements.

   Here are some additional RSM hints:

   • You can create a new sequence diagram by right-clicking on lab08model and choosing Add Diagram - Sequence Diagram. Name the new diagram Pay Duty.
   • When you draw a message line to a lifeline, you can choose either an existing message (method) or create a new one. Remember that fleshing out the analysis model into a domain model is one of the primary benefits of interaction diagrams.
   • You can open the class diagram and flip between diagrams by clicking on the tabs at the top of the editing pane.
   • RSM supports UML 2, so you can use a Combined Fragment to model guard conditions.