Test Design: Decision Tables (Part 2)

Part 1 introduced decision tables and how to build them from business rules. This post (Part 2) goes deeper: simplifying large tables, choosing coverage strategies, a full worked example from table to test cases, and how to keep traceability so your tests stay maintainable.

Simplifying decision tables

When you have many conditions, the number of columns can explode (e.g. 4 binary conditions → 16 columns). Simplification keeps the table usable without losing important coverage.