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DMN Glossary

  • Decision
  • Decision Model
  • Decision Model Type / Notations

Decision Table


A decision table is a tabular representation of a set of decision rules, with each decision rule indicating the resulting decision(s) for a combination of conditional expressions. Because of the tabular format, the order of the condition attributes in the conditional expressions is the same throughout the table.

  • Special case: A binary decision table is a decision table where the outcome of every condition evaluation for each condition is limited to two (usually Y/N). When a binary decision table is represented as a decision tree, the tree is binary.
Types of decision tables:

A distinction is made between single hit decision tables and multiple hit decision tables:

  • In a multiple hit decision table, decision rules are allowed to be non-exclusive. Non-exclusive (or overlapping) decision rules means that one decision case can match more than one decision rule. When non-exclusive decision rules are present, the order of the rules is often used to determine the appropriate rule (usually the first rule that applies).
  • In a single hit decision table, all decision rules are exclusive (non-overlapping). One decision case can match only one decision rule.

A decision table is complete if all possible decision cases are covered in the decision rules.

Decision Tree

Decision Graph

Decision Matrix

Karnaugh Maps -

  • Decision Process
  • Decision Service
  • Decision variable
glossary.txt · Last modified: 2010/06/21 01:46 by vanthienen