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Contents Contents 1 Design 2 Definition of data requirements 2 User interface design including output, forms and reports 3 Method of data entry, including validation 5 Record structure, file organisation and processing 5 System design 11 Security and integrity of data 12 Implementation/Testing 13 Design Background Tod's Tyres is a small business that supplies new car tyres to company car fleets and car hire firms. I have been asked to create a computer application, either programmed or using a database, to replace the current manual record-keeping system. Definition of data requirements When a car is brought to Tod, the following information is recorded on the card "CARDTBL": (invoice number), (car registration number), (company name), (type of tyre), (date), (car mileage), (number of new tyres fitted), (comment) and (total price). The next time the company books in a recorded car for new tyres, Tod checks the cars file to see what type of tyre that car has fitted; he then ensures hat he has the required tyres in stock: "PRICELISTTBL" (type of tyres),...

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