Advanced – Cloud & Data Testing
Data Subsetting – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A test data management technique that extracts a referentially intact subset of production data for testing.
In simple words
Copying just a slice of production data — with all relationships intact — for testing.
Exam tip
Subsetting reduces storage and privacy risk while preserving referential integrity.
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