IDEF1
IDEFØ
Function Modeling Method - IDEFØ is a method designed to model the decisions, actions, and activities of an organization or system.

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IDEF1
Information Modeling Method - IDEF1 was designed as a method for both analysis and communication in the establishment of requirements.

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IDEF3
Process Description Capture Method - The IDEF3 Process Description Capture Method provides a mechanism for collecting and documenting processes.

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