DFD (Data Flow Diagram)

A Data Flow Diagram (DFD) is a visual tool used to represent how information moves within a system. It shows the flow of data between processes, data stores, and external entities. By using symbols like arrows, circles, and rectangles, a DFD helps illustrate how inputs are processed into outputs, making it easier to understand complex systems. This diagram is valuable for analyzing and improving processes in various fields, as it clarifies relationships and ensures that everyone involved comprehends how data interacts within the system.