Decisions

The decision table puts business rules where the business can read them: inputs across the top, answers on the right, one rule per row — who is approved, what a parcel costs, which team a ticket goes to. Cells are written the way the DMN standard writes them (< 18, [18..65), "UK", "IE", not(...)), or as spreadsheet formulas with the inputs as names.

All seven DMN hit policies decide what happens when several rules match, including collecting answers and adding them up. Try values and see which rule fired, which cell stopped each of the others, and why, in plain sentences. Check finds the cases no rule covers and the rules that collide, and adds a rule for a gap in one press. Test cases live with the table, and tables move to and from other rules engines as DMN 1.3 XML. Nothing is run with eval.