A-LevelComputer ScienceData types and structures9618/32 · Oct/Nov 2024 · Q37 Marks

Describe the user-defined data type record.

(a)Describe the user-defined data type record.[3]
(b)A programmer defines a record, Order, to store the following data: • account number • order number • order price • order date. Write pseudocode statements to define this record.[4]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2024). The mark or mark type is shown in brackets.

[3] MP1 A user-defined record data type is a composite data type
[3] MP2 It uses other data types in its definition to form a single new data type
[3] MP3 The data types referenced may be primitive data types from a programming language or they may be other user-defined data types.
[3] MP4 Includes related items
[3] MP5 Includes a fixed number of items.
[4] One mark for TYPE Order and ENDTYPE correct
[4] One mark for correct use of DECLARE in all declarations seen
[4] One mark for the two shaded declarations
[4] One mark for the two unshaded declarations

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Topic: Data types and structures, A-Level Computer Science (syllabus 9618). Structured question, 7 marks.
Source: A-Level Computer Science, Oct/Nov 2024 Paper 3 Variant 2, question 3.

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