Unformatted text preview: In groups of four, construct a data flow diagram that describes a grocery store point-of-sale system that uses a club card. The major events along this process are: • A customer purchases goods and their card is scanned at the point-of-sale. • Based on the set of items purchased during this session and items purchased during the last month, customized coupons are printed along with the receipt. • If the customer has purchased $250.00 worth of groceries in the last month, they get an immediate discount of 10%. • A customer may pay with cash, a credit card, or a debit card. The credit card is validated at the time of sale with the credit card company. The debit card is validated at the time of sale with the customer’s bank. • The set of purchased items are sent to the grocery store’s inventory system Be as detailed as possible, especially with the data flows. We’ll be discussing this later in the class....
View Full Document
- Fall '09
- Supermarket, Grocery store, Safeway Inc.