You are tasked with creating the basic types for a new web shop. As a customer, you can search through the existing product database and compare different items by reviewing specifications and reviews from other users. The system should keep track of popular products and make recommendations to the customer. Of course, the customer can then select the products he wants and place an order. There are also some business rules that you need to be aware of. A new customer is not allowed to place an order that exceeds $500. An order should be at least $10 to qualify for free shipping. More business rules will be added, but are not clear at the moment. Answer the following questions for your manager: