Examine the following ER diagram for CustomerOrder example, which also appears in Figure 4.9 (located in the textbook):
1. Write a relational schema for this E-R diagram. Underline primary keys and indicate foreign keys. Note: Foreign keys are in italic.
2. Using Oracle, create the database to correspond to the relational schema.
3. Insert several records in each table.
4. Make up five questions and design five queries.
5. Execute the five queries in the database and show the results.
