IDEF0 Diagrams

"IDEF0, a compound acronym (Icam DEFinition for Function Modeling, where 'ICAM' is an acronym for Integrated Computer Aided Manufacturing) is a function modeling methodology for describing manufacturing functions, which offers a functional modeling language for the analysis, development, reengineering, and integration of information systems; business processes; or software engineering analysis.
IDEF0 is part of the IDEF family of modeling languages in the field of software engineering, and is built on the functional modeling language Structured Analysis and Design Technique (SADT). ...
FIPS PUB 183 "Integration Definition for Function Modeling (IDEF0)," was withdrawn as a Federal Standard (in favor of OPEN Specifications and Standards) September 2, 2008, as cited in "The Federal Register", Volume 73, page 51276 (73FR/ 51276). ...
IDEF0, used to produce a "function model". A function model is a structured representation of the functions, activities or processes within the modeled system or subject area." [IDEF0. Wikipedia]
The template "IDEF0 diagram" is included in the IDEF0 Diagrams solution from the Software Development area of ConceptDraw Solution Park.

This example of a Top Level Context Diagram for an information system management process was redesigned from the Wikipedia file: IDEF Top-Level Context Diagram.jpg. [en.wikipedia.org/ wiki/ File:IDEF_ Top-Level_ Context_ Diagram.jpg]
"Graphical notation.
IDEF0 is a model that consists of a hierarchical series of diagrams, text, and glossary cross referenced to each other. The two primary modeling components are:
(1) functions (represented on a diagram by boxes), and
(2) data and objects that interrelate those functions (represented by arrows).
... the position at which the arrow attaches to a box conveys the specific role of the interface. The controls enter the top of the box. The inputs, the data or objects acted upon by the operation, enter the box from the left. The outputs of the operation leave the right-hand side of the box. Mechanism arrows that provide supporting means for performing the function join (point up to) the bottom of the box.
The IDEF0 process.
The IDEF0 process starts with the identification of the prime function to be decomposed. This function is identified on a “Top Level Context Diagram,” that defines the scope of the particular IDEF0 analysis. ... From this diagram lower-level diagrams are generated." [IDEF0. Wikipedia]
The IDEF0 diagram example "Top-level context diagram" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the IDEF0 Diagrams solution from the Software Development area of ConceptDraw Solution Park.

This IDEF0 diagram example was redesigned from the Wikimedia Commons file: 6 Decomposition Structure.svg.
[commons.wikimedia.org/ wiki/ File:6_ Decomposition_ Structure.svg]
"Functional decomposition refers broadly to the process of resolving a functional relationship into its constituent parts in such a way that the original function can be reconstructed (i.e., recomposed) from those parts by function composition. In general, this process of decomposition is undertaken either for the purpose of gaining insight into the identity of the constituent components (which may reflect individual physical processes of interest, for example), or for the purpose of obtaining a compressed representation of the global function, a task which is feasible only when the constituent processes possess a certain level of modularity (i.e., independence or non-interaction). Interactions between the components are critical to the function of the collection. All interactions may not be observable, but possibly deduced through repetitive perception, synthesis, validation and verification of composite behavior." [Functional decomposition. Wikipedia]
The example "IDEF0 diagram - Decomposition structure" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the solution "IDEF Business Process Diagrams" from the area "Business Processes" of ConceptDraw Solution Park.

This IDEF0 diagram was redesigned from the Wikimedia Commons file: 18 Example of Tunneled Arrows.svg.
[commons.wikimedia.org/ wiki/ File:18_ Example_ of_ Tunneled_ Arrows.svg]
"Tunneled Arrows.
Arrows that provide information at one level of decomposition but are not needed at another (parent, child) level." [classes.engr.oregonstate.edu/ mime/ fall2013/ ie545-001/ Slides/ class%20 01-3b%20 IDEF0%20 1%20 revised.pdf]
The example "IDEF0 diagram - Tunneled arrows" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the solution "IDEF Business Process Diagrams" from the area "Business Processes" of ConceptDraw Solution Park.

This IDEF0 diagram example was redesigned from the Wikimedia Commons file: C4ISR Architecture Framework, Example Activity Diagram in IDEF0 Format.jpg. [commons.wikimedia.org/ wiki/ File:C4ISR_ Architecture_ Framework,_ Example_ Activity_ Diagram_ in_ IDEF0_ Format.jpg]
"... the C4ISR concept of Command, Control, Communications, Computers, Intelligence, Surveillance and Reconnaissance ..." [en.wikipedia.org/ wiki/ C4ISR]
"The C4ISR Architectural Framework (C4ISR AF) is now known as DoDAF, is a reference model developed by the US Department of Defense in the 1990s." [commons.wikimedia.org/ wiki/ Category:C4ISR_ Architecture_ Framework]
"The Department of Defense Architecture Framework (DoDAF) is an architecture framework for the United States Department of Defense (DoD) that provides visualization infrastructure for specific stakeholders concerns through viewpoints organized by various views. These views are artifacts for visualizing, understanding, and assimilating the broad scope and complexities of an architecture description through tabular, structural, behavioral, ontological, pictorial, temporal, graphical, probabilistic, or alternative conceptual means.
This Architecture Framework is especially suited to large systems with complex integration and interoperability challenges, and it is apparently unique in its employment of "operational views". These views offer overview and details aimed to specific stakeholders within their domain and in interaction with other domains in which the system will operate." [en.wikipedia.org/ wiki/ Department_ of_ Defense_ Architecture_ Framework]
The example "C4ISR architecture framework - IDEF0 activity diagram" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the solution "IDEF Business Process Diagrams" from the area "Business Processes" of ConceptDraw Solution Park.

This IDEF0 diagram example was redesigned from the Wikimedia Commons file: 12 Connections Between Boxes.svg.
[commons.wikimedia.org/ wiki/ File:12_ Connections_ Between_ Boxes.svg]
"Graphical notation.
IDEF0 is a model that consists of a hierarchical series of diagrams, text, and glossary cross referenced to each other. The two primary modeling components are:
- functions (represented on a diagram by boxes), and
- data and objects that interrelate those functions (represented by arrows).
.... the position at which the arrow attaches to a box conveys the specific role of the interface. The controls enter the top of the box. The inputs, the data or objects acted upon by the operation, enter the box from the left. The outputs of the operation leave the right-hand side of the box. Mechanism arrows that provide supporting means for performing the function join (point up to) the bottom of the box." [IDEF0. Wikipedia]
The example "IDEF0 diagram - Inter-box connections" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the solution "IDEF Business Process Diagrams" from the area "Business Processes" of ConceptDraw Solution Park.

This IDEF0 diagram example was redesigned from the Wikimedia Commons file: 7 Detail Reference Expression Use.svg.
[commons.wikimedia.org/ wiki/ File:7_ Detail_ Reference_ Expression_ Use.svg]
The example "IDEF0 diagram - Detail reference expression use" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the solution "IDEF Business Process Diagrams" from the area "Business Processes" of ConceptDraw Solution Park.

The vector stencils library "IDEF0" contains 26 IDEF0 diagram symbols.
Use it for business process modeling with IDEF0 diagrams.
"The IDEF0 model ... is based on a simple syntax. Each activity is described by a verb-based label placed in a box. Inputs are shown as arrows entering the left side of the activity box while output are shown as exiting arrows on the right side of the box. Controls are displayed as arrows entering the top of the box and mechanisms are displayed as arrows entering from the bottom of the box. Inputs, Controls, Outputs, and Mechanisms are all referred to as concepts.
- Arrow: A directed line, composed of one or more arrow segments, that models an open channel or conduit conveying data or objects from source (no arrowhead) to use (with arrowhead). There are 4 arrow classes: Input Arrow, Output Arrow, Control Arrow, and Mechanism Arrow (includes Call Arrow). See Arrow Segment, Boundary Arrow, Internal Arrow.
- Box: A rectangle, containing a name and number, used to represent a function.
- Context: The immediate environment in which a function (or set of functions on a diagram) operates.
- Decomposition: The partitioning of a modeled function into its component functions.
- Fork: The junction at which an IDEF0 arrow segment (going from source to use) divides into two or more arrow segments. May denote unbundling of meaning.
- Function: An activity, process, or transformation (modeled by an IDEF0 box) identified by a verb or verb phrase that describes what must be accomplished.
- Join: The junction at which an IDEF0 arrow segment (going from source to use) merges with one or more other arrow segments to form a single arrow segment. May denote bundling of arrow segment meanings.
- Node: A box from which child boxes originate; a parent box. See Node Index, Node Tree, Node Number, Node Reference, Diagram Node Number." [IDEF0. Wikipedia]
The shapes example "Design elements - IDEF0" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the solution "IDEF Business Process Diagrams" from the area "Business Processes" of ConceptDraw Solution Park.