Blog Posts BPMN DMN

DMN Demystified, Part 2. Key Element 1: Decision Requirements Diagram

Blog: Method & Style (Bruce Silver)

The one part of the spec that every DMN tool supports is the Decision Requirements Diagram, or DRD. It provides a business-friendly picture of the dependencies of a high-level business decision on supporting information. Rectangles in the diagram represent decision nodes. A decision has a name (the label in the rectangle) and a value determined by the node’s decision logic, or value expression, such as a decision table. In a DRD, the solid arrows into each decision represent its information requirements, either a supporting decision or an input data element, the oval shape.

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