Don buys a new bicycle at a local shop and pays with his debit card. The sales clerk enters the transaction in the cash register. At the time of closing, the sales clerk gives the register tape and the debit card PIN tape to his manager.

1. What is the data source?

a. Sales clerk

b. Manager

c. Customer

d. Debit card

2. Which process should NOT be included in this company's DFD?

a. Record sales in the cash register

b. Buy a bicycle at a local shop

c. Give cash and register tape to the manager

d. Capture customer payment data

3. Which of the following are data flows in the DFD?

a. Payment

b. Cash register

c. Closing sales

d. Sales clerk

4. Which of the following are data stores (data storage) in the DFD?

a. Merchandise

b. Sales clerk

c. Cash register

d. Debit card