Sale 1..1------------0..1 Cash Receipt

2. Consider the sale and cash receipt classes shown in Discussion Question 1. What kind of business is this (in terms of its payment requirements from customers)? How would the multiplicities change if the business (e.g., a used car dealer) accepted multiple payments over time?

7. Think about the last time that you purchased something over the Internet. What did the checkout page look like? What business rules applied?