DFD Levels

Data Flow Diagrams (DFDs) visually represent how data moves within a system. DFD levels show different layers of detail: Level 0 offers an overall view of the entire system’s main functions, like a high-level map. Level 1 breaks down those functions into smaller, more specific processes, providing better clarity. Higher levels (Level 2, Level 3, etc.) delve even deeper into individual processes, showing detailed steps. This layered approach helps stakeholders understand the system's complexity progressively, making it easier to analyze, improve, or develop the system effectively.