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Data inconsistency — AQA GCSE Computer Science Definition

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Computer Science
Key terms
Data inconsistency

GCSE Computer Science · key term

Data inconsistency

Definition

A situation in which stored values for the same fact disagree.

Used by AQA

How each exam board covers it

AQA GCSE Computer Science · 8525

Paper 2

If someone changes Aisha's record but misses Ben's and Chloe's, the database holds both B4 and C2 as the current room for the same tutor. This is data inconsistency: stored values for the same fact disagree.
Revise: Benefits of Relational Databases

AQA Computer Science past papers

Related key terms

Data redundancy
Foreign key
Primary key
Relational database

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