Skill level: Advanced
Integrated definition for function modeling (IDEF0) is a method of function modeling for business systems and an engineering approach for needs analysis. IDEF0 technique uses a box to represent functions within a process and shows relationships to child and parent systems. This technique provides a blueprint for understanding an organization’s systems.
- Provides improved systems analysis
- Provides improved communication techniques
- Helps in understanding a system and its relationships
How to Use
- Step 1. Create a verb box (for example, “perform inspection”).
- Step 2. Determine wanted inputs, outputs, control systems, and support systems.
- Step 3. Determine parent systems.
- Step 4. Determine child systems.
- Step 5. Draw IDEF0 diagram.
Boundary arrow: An arrow where the source end is not connected to a box on a diagram.
Box: A rectangle with the name and number that represents a function.
Box name: The verb or verb phrase inside the box that describes the function.
Call arrow: An arrow that links together models or that links functions inside a model.
Child diagram: The diagram that details a parent box.
Function: The process, transformation, or activity that is identified by the box name.
Internal arrow: An input, control, or output arrow connected at both ends (source and use) to a box on a diagram.
Parent box: The box that is detailed by the child diagram.
Parent diagram: The diagram that contains the parent box.