What term describes a chart illustrating the flow of data between different modules in software?

The term that describes a chart illustrating the flow of data between different modules in software is a data flow diagram. This type of diagram is specifically designed to show how data moves through a system, including the inputs, processes, outputs, and storage points. Data flow diagrams focus on the transitions of data and how information is transformed as it passes between different parts of the system.

In software development and system analysis, data flow diagrams serve as powerful communication tools. They allow developers and stakeholders to visualize and understand the interactions between modules in a way that is clear and structured. By representing the flow of data, these diagrams help identify where data originates, how it is processed, and where it is ultimately directed, making them essential for designing efficient and effective software systems.

While flowcharts depict processes and decision points, and entity-relationship diagrams emphasize data relationships within databases, data flow diagrams specifically target the flow of information, making them the most suitable choice for describing how data travels through system modules. Network diagrams, on the other hand, focus more on the physical layout of network components rather than data flow.