It Computer System

Petrol Pump System Requirements Definition The musical musical arrangement is intended to exit a 24-hour accelerator dispensing service to customers with unattended ope desertion. Rationale The rationale for introducing this system is to reduce the costs of providing a 24-hour service and, at the same time, augment the security of the trading operations by ensuring that no cash is held on the premises. There ar four functions to be provided for this system. consultation governing body The customer swipes their proportion card through with(predicate) the card referee and their attribute limit is corroborateed. Petrol Delivery The fuel undeniable by the customer is dispensed Account Updating The appropriate accounts be updated Payment Limit The maximal amount of fuel which rat be dispensed is subject to a limit of #25. realization Validation 1. The system is activated by the user crush a start button and swiping their consultation card through the credit card trainer. 2. If the reader fails to read the card, the customer should be pass on to re-try. Up to three re-tries should be allowed. 3. If at that place are to a greater extent than three read failures, the dealings should be terminated and the customer assured that gas sternnot be dispensed. 4.

Once the card has been read correctly, parley should be made with the credit card company computer to prove the customers credit limit. 5. If the credit limit is to a greater extent than #25, the customer should be conscious that up to #25 cost of fuel can be dispensed. 6. If the credit limit is between #5 and #25, the customer should be conscious! that an amount of fuel up to the credit limit whitethorn be dispensed. 7. If the credit limit is less(prenominal) than #5, the customer should be informed that no petrol can be dispensed and the transaction should be terminated. Petrol Delivery 1. The customer should prolong their intention to continue the transaction by choosing a figure of petrol to be dispensed. When the choice is made, the system informs the customer of the number of maximum number or litres...If you want to get a visible essay, order it on our website: OrderCustomPaper.com

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