Describe the difference between a use case and a class diagram. What is the purpose of each? What role do they play in object-oriented-programming design specifically?

1. Describe the difference between a use case and a class diagram. What is the purpose of each? What role do they play in object-oriented-programming design specifically?
2. Create a class diagram that describes an automobile dealership. Your class diagram should include at least 6 classes and show the relationships between the classes.

Refer to this site for additional examples of class diagrams:
http://www.agilemodeling.com/artifacts/classDiagram.htm

Address the first question posed and then create the two diagrams as instructed below.

You can create your diagrams in Visio®, Word, or PowerPoint® (using drawing tools in Word or PowerPoint) or draw them out by hand and share photos.