# Flow diagram

A flow diagram is a diagram representing some kind of flow. The most known is the flowchart, but there are more kind of flow diagrams.

## In general

### Flow charts

Main gallery: Flow chart.

The flowchart represents an algorithm, a process, or the step-by-step solution of a problem. See Category:Flow diagrams

### Flow maps

Flow maps show the movement of objects from one location to another. See Category:Flow maps

### Sankey diagram

Sankey diagram are a specific type of flow diagram, in which the width of the arrows is shown proportionally to the flow quantity. See Category:Sankey diagrams

## Specific applications

### Accountancy diagrams

Main Category:Accounting diagrams

## Flow diagrams in economics

### Economic circular flow diagram

Main Category:Economic circular flow diagrams

## Flow diagrams in engineering

### Process flow diagrams

A process flow diagram (PFD) is a diagram commonly used in chemical and process engineering to indicate the general flow of plant processes and equipment. See Category:Process flow diagrams

## Flow diagrams in systems engineering or software engineering

### Activity diagram

An activity diagram is a diagram that shows activities and actions to describe workflows. It is in fact a specific type of flowchart, which shows a sequence of activities. See Category:Activity diagrams

Business Process Modeling Notation (BPMN) is a standardized graphical notation for drawing business processes in a workflow. See Category:Business Process Modeling Notation

### Data flow diagram

A data flow diagram is a graphical representation of the flow of data through an information system. See Category:Data flow diagrams

### Function Block Diagram

A Function Block Diagram (FBD) is a diagram, that describes a function between input variables and output variables. A function is described as a set of elementary blocks. Input and output variables are connected to blocks by connection lines. See Category:Function block diagrams

### Functional Flow Block Diagrams

Functional Flow Block Diagrams (FFBD) are multi-tier, time-sequenced, step-by-step flow diagram of the system’s functional flow, see Category:Functional flow block diagrams

### IDEF0

IDEF0 is an Integration Definition for function Modeling, and is a common modeling technique for the analysis, development, re-engineering, and integration of information systems; business processes information modelling. See Category:IDEF0

### Nassi-Shneiderman diagram

Nassi-Shneiderman diagram, see Category:Nassi-Shneiderman diagrams

### Process-data diagram

A process-data diagram is a diagram that describes processes and data that act as output of these processes. See Category:Process-data diagram

### UML Activity diagrams

An activity diagram in UML represents the business and operational step-by-step workflows of components in a system. An activity diagram shows the overall flow of control. See Category:UML Activity diagrams