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IDEF3, officially named a Integrated DEFinition for Process Description Capture Method, is a business process modelling method complementary to IDEF0. The IDEF3 method is a scenario-driven process flow description capture method intended to capture the knowledge about how a particular system works.
The IDEF3 method provides modes to represent both
- Process Flow Descriptions to capture the relationships between actions within the context of a specific scenario, and
- Object State Transition to capture the description of the allowable states and conditions.
This method is part of the IDEF family of modeling languages in the field of systems and software engineering.