Furniture Row recently hired you as a DB intern for the semester. To assess your DB knowledge, your manager asked you to perform conceptual modeling (ERD) and logical design (Relational Model) using the following business requirements. Furniture Row sells a number of furniture products. Here are the business requirements for the system:

1. The company sells a number of different furniture products. a. These products are grouped into several product lines. b. The identifier for a product is Product_ID, while the identifier for a product line is Product_Line_ID. c. Referring to the customer invoice, we identify the following additional attributes for product: Product_Description, Product_Finish, and Unit_Price. d. Another attribute for product line is Product_Line_Name. e. A product line may group any number of products, but must group at least one product. f. Each product must belong to exactly one product line.

2. Customers submit orders for products. The identifier for an order is Order-ID, and another attribute is Order_Date. a. A customer may submit any number of orders, but need not submit any orders. b. Each order is submitted by exactly one customer. c. The identifier for a customer is Customer_ID. d. Other attributes include Customer_Name and Customer_Address.

4. Furniture Row has established sales territories for its customers. a. Each customer does business in one or more of these sales territories. b. The identifier for a sales territory is Territory_ID. c. A sales territory may have any number of customers, or may not have any customers doing business.

3. A given customer order must request at least one product. a. Any product sold by Furniture Row may not be requested on any order, or may be requested on one or more orders. b. An attribute associated with each order and product is Quantity, which is the number of units requested. c. A sales territory may have any number of customers, or may not have any customers doing business.

5. Furniture Row has several salespersons. The identifier for a salesperson is Salesperson_ID. a. Other attributes include Salesperson_Name, Salesperson_Telephone, and Salesperson_Fax. b. A salesperson serves exactly one sales territory. c. Each sales territory is served by one or more salespersons.

6. Each product is assembled from one or more raw materials. a. The identifier for the raw material entity is Material_ID. b. Other attributes include Unit_of_Measure and Unit_Price. c. Each raw material may be assembled into one or more products.

7. Raw materials are supplied by vendors. a. The identifier for a vendor is Vendor_ID. b. Other attributes include Vendor_Name and Vendor_Address. c. Each raw material can be supplied by one or more vendors. d. A vendor may supply any number of raw materials, or may not supply any raw materials to Furniture Row. e. An attribute of the relationship between vendor and raw material is Unit_Price

8. Furniture Row has established a number of work centers. a. The identifier for a work center is Work_Center_ID. b. Another attribute is Location. Each product is produced in one or more work centers. c. A work center may be used to produce any number of products, or may not be used to produce any products.

9. The company has over 100 employees. a. The identifier for employee is Employee_ID. b. Other attributes are Employee_Name, EmployeeAddress, and Skill. c. An employee may have more than one skill. d. A skill can be mastered by many employees.

10. Each employee works in one or more work centers. a. A work center must have at least one employee working in that center, but may have any number of employees.

11. Each employee has exactly one supervisor. a. An employee who is a supervisor may supervise any number of employees, but not all employees are supervisors.

Develop an ERD model using the traditional ERD notation as specified by your instructor. Then perform logical database design by transforming your ERD to a relational model. Do note down any assumptions that you make if such information is not provided in the homework instructions.