1. Define the terms supertype, subtype, and discriminator.
2. What is an exclusive subtype relationship? Give an example other than one shown in this book. Draw an IE Crow's Foot E-R diagram for your example.
3. What is an inclusive subtype relationship? Give an example other than one shown in this chapter. Draw an IE Crow's Foot E-R diagram for your example.
4. Give an example of a recursive relationship other than the one shown in this chapter. Draw an IE Crow's Foot E-R diagram for your example.