jBPM DMN Explained – Knowledge Source, Knowledge Model, Decision, Decision Service, Input Data & Text Annotation (with Examples)
DMN (Decision Model and Notation) in jBPM is used to model and automate business decisions in a clear, auditable, and business-friendly way. At the heart of DMN is the Decision Requirements Diagram (DRD) , which is built from specific elements: Knowledge Source Knowledge Model (Business Knowledge Model) Decision Decision Service Input Data Text Annotation This guide explains what each element means , when to use it , and how they work together —with examples and a comparison table. ⭐ 1. DMN Knowledge Source 🔹 What is a Knowledge Source? A Knowledge Source documents where a decision’s logic comes from . It represents: Laws and regulations Company policies External standards Expert knowledge ⚠️ Important: A Knowledge Source does not execute logic . It is documentation only . 🔹 Example “Loan approval rules are based on RBI guidelines and internal bank policy.” ⭐ 2. DMN Knowledge Model (Business Knowledge Model – BKM) 🔹 What is a Knowledge Model? A...