1. Using a class diagram, design an object-oriented solution for the previous problem. 2. Draw a simple class diagram representing the relationships between magazine publishers, magazines, and...

1.
Using a class diagram, design an object-oriented solution for the previous problem.

2.
Draw a simple class diagram representing the relationships between magazine publishers,

magazines, and subscribers. It is sufficient to depict only the class name within each box representing a class.

3.
How is the relationship between the system and the user represented in a use case diagram?

4.
Draw a simple use case diagram depicting the ways in which a traveler uses an airline reservation system.