Generate a conceptual model for each of the following problem

Sales rep data include a sales rep number (unique identifier), name, and phone number. A sales rep services 0 or more customers. Customer data includes a customer number (unique identifier), name, address, and phone. Each customer places 1 or more orders. Order data include an order number (unique identifier) and order date. Each order contains 1 or more products. Products can be listed on 0 or more orders. Product data includes a product number (unique identifier), description, and price. Each product contained on an order has a quantity ordered. Hint: be careful with the relationship between Product and Order. How will you deal with quantity?