What does DFD stand for?

In the context of systems analysis and design, DFD stands for Data Flow Diagram. A Data Flow Diagram is a visual representation of the flow of data within a system. It describes how data moves from one element to another and shows the processes that transform that data.

DFDs are particularly useful for illustrating the interactions between different components of a system, making them an important tool in understanding system requirements and functionalities. They help in identifying the inputs and outputs of each process, encapsulating the overall functioning of the system clearly and succinctly. This enables stakeholders to visualize the handling of data, making it easier to identify any potential issues or areas for improvement.

In contrast to the other options, which either skew the focus on different diagram types or inaccurately label the concept, Data Flow Diagram specifically addresses the flow of data, making it essential for systems analysis and design practices.