Chapter 4 – Test Analysis and Design
Decision Table Testing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A black-box test technique in which test cases are designed to execute the combinations of inputs and/or stimuli (causes) shown in a decision table.
In simple words
When behaviour depends on combinations of conditions (like discount rules), you list every condition and expected action in a table and turn each column into a test case.
Exam tip
Decision tables are ideal when business rules combine multiple conditions — expect a scenario question that asks you to count the rules or actions.
Related terms
- State Transition TestingYou model the system as states (Logged Out, Logged In, Locked) and design tests that trigger valid and invalid transitions between them.
- Equivalence PartitioningGroup inputs that the system should treat identically, then pick one value from each group. That way you cover behaviour without testing every possible value.
- Test CaseA single, executable check with a clear setup, action, and expected outcome — the atomic unit of testing.
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