What is "decision table"

n. a table or matrix of all contingencies and the actions to be taken for each

Decision tables are a precise yet compact way to model complex rule sets and their corresponding actions.

Decision tables, like flowcharts, if-then-else, and switch-case statements, associate conditions with actions to perform, but in many cases do so in a more elegant way.

In the 1960s and 1970s a range of "decision table based" languages such as Filetab were popular for business programming.