Chapter 4 - Laboratory Exercise: ER Diagram 4. Make up five questions and design a query to answer each question. Examine the following ER diagram for CustomerOrder example, which also appears in Figure 4.9 (located in the textbook): 5. Execute the five queries in the database and show the results. date street Glity totalAmount lastame firstName orderlo state tax zip custName custAdd deliver to Address creditLimit Order custid zip state M stree! city Buys Customer deliver To Phone areaCode Phone Contains quantity number (areaCode number (0) 000 000 unitCost reorderPoint Supplier M Supplies Item qtyOn Hand contactName supplierlo itemNo itemName unit Price supAdd supName street country phone city Zip/ postal Code slate countryCode areaCode number 1. Write a relational schema for this er diagram. Underline primary keys and indicate foreign Keys! 2. Using Oracle, create the database to correspond to the relational schema. 3. Insert three to five records in each table