1. How are the different relations in a relational database tied together? 2. What methods would be contained in an instance of an object from the Assignment class in the employee database discussed...

1.
How are the different relations in a relational database tied together?

2.
What methods would be contained in an instance of an object from the Assignment class in the employee database discussed in this section?

3.
What is a persistent object?

4.
Identify some classes, as well as some of their internal characteristics, that can be used in an object-oriented database dealing with a warehouse inventory.

5.
Identify an advantage that an object-oriented database can have over a relational database.