Advanced – Cloud & Data Testing
Sharding – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A horizontal partitioning technique that splits a large database across multiple servers by a shard key.
In simple words
Splitting a big database across many servers by some key.
Exam tip
Test shard-key hotspots and cross-shard query behavior.
Related terms
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