You are developing the requirements for an online shopping system. To place an order, a user
connects to the system, searches to find items to purchase, selects one or more items, and supplies
credit card information to pay for them.
1-Create a scenario for a user making a purchase
2-Develop a use case diagram and brief specification for a use case, PlaceOrder, which is modeled
on this scenario. The use case should show a relationship to a previously specified use case,
Pay, which models credit card payments. (You do not need to specify the Pay use case.)