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Cambridge AS & A Level Computer Science

6.2Data integrity

Data integrity in Cambridge AS & A Level Computer Science: what the syllabus expects you to know, the learning objectives and how to practise.
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Learning objectives

What the syllabus expects you to be able to do.

  1. 6.2.1Describe and use methods of data validation (range, format, length, presence, existence, limit and check digit).
  2. 6.2.2Describe and use methods of data verification during entry and transfer (visual check, double entry, parity, checksum).

Lessons

  • Data validation and verification

    60 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Data integrity: sample question

1 mark

A form for a new customer must not be saved if the surname field is left blank. Which validation check is this?

Choose one answer

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