Let the use case below:

Buy Product:

Visitor browses catalog & selects items to buy

Visitor register to the system to purchase products (becomes costumer)

Customer goes to check out

Customer fills in shipping information (phone number, address, next-day or 3-day delivery)

System presents full pricing information

Customer fills in credit card information

System forward the payment details to the credit card company for validation

Credit card company authorizes purchase

System confirms sale immediately

System sends confirming email and SMS to customer

Questions:

1. Identify the different Actors (specify their type)
2. Identify each use case and give a brief description
3. Draw a UML Use Case diagram for the detailed use case Buy Products use the most possible relation seen in the lectures