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Discovering Attributes - Exercise
 

Course project: extend a sequence diagram
Objective: Extend a sequence diagram to add data sources.
Exercise scoring
This exercise is worth 10 points.
Background/overview
This is the eighth exercise in the course project.
Download files
Click the link below to download the file you will need to complete this exercise.
Module 3 Lesson 7 - Download

Instructions
Click the View Image link below to review the initial sequence diagram for this exercise.
Task 1: Find a new parameter and its source.
Problem: The ticket has to print the location of the seat.
Goal: Find out which object owns the seat location and get it. Update the sequence diagram accordingly.
Task 2: Find a new return value and its source.
Problem: The purchase requires a discount value.
Goal: Find out which object owns the discount value and get it.
(To simplify the solution, assume that the total number of tickets and their value have been computed by the Purchase object and are ready to be used as parameter values when the discount is needed.)
Update the sequence diagram accordingly.

Submitting your exercise
To submit the exercise, follow the steps below:
Step 1
  1. In the Subject field, type OOA 2- Course project, part 2- Module 3
    Presnet this specific text in the Subject field to match the exercise to the person who created it.
  2. Include your answers to the questions above in the Text field of your email.
  3. Attach your file. Make sure your file is named discovering-attributes-exercise.gif
    Each email program has a slightly different way of attaching files. Please check your program's documentation for full instructions.

Step 2
In the text area below, type Course project, part 2. In addition, you can include any questions or comments you have about the exercise.
When you are ready to submit the exercise, click the Submit button.