A-LevelComputer ScienceData StructuresOct/Nov 2025Paper 2 Q39 Marks
A program is needed to manage individual rentals in a car-hire business. The data items for each rental will be held in a record structure of type RentalRecord The programmer has started to define the items that will be needed: Item Example value Comment RentalID "AB1234" a unique alpha-numeric value CarID 241 a numeric value used as an array index DisCode 'S' a letter indicating the type of discount offered Start 13/06/2025 when the rental starts Duration 7 the number of days of the rental Completed FALSE TRUE when the car is returned and the rental charge paid
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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