What is a data flow diagram?
A data flow diagram (DFD) maps out the flow of information for any process or system. It uses defined symbols like rectangles, circles and arrows, plus short text labels, to show data inputs, outputs, storage points and the routes between each destination.
Data flowcharts can range from simple, even hand-drawn process overviews, to in-depth, multi-level DFDs that dig progressively deeper into how the data is handled. They can be used to analyze an existing system or model a new one.
Like all the best diagrams and charts, a DFD can often visually “say” things that would be hard to explain in words, and they work for both technical and nontechnical audiences, from developer to CEO. That’s why DFDs remain so popular after all these years. While they work well for data flow software and systems, they are less applicable nowadays to visualizing interactive, real-time or database-oriented software or systems.
It's easy to understand the flow of data through systems with the right data flow diagram softwareThis guide provides everything you need to know about data flow diagrams, including definitions, history, and symbols and notations. You'll learn the different levels of a DFD, the difference between a logical and a physical DFD and tips for making a DFD.
Available on https://www.lucidchart.com/pages/data-flow-diagram. Acceso el 1 de noviembre, 2020.
1. ¿ Para qué sirve un diagrama de flujo?
2. ¿ Qué símbolos usa?
3. ¿ Cómo varían estos diagramas?
4. ¿ En qué se pueden usar?
1. Un diagrama de flujo muestra cosas visualmente.
2. No funcionan bien para sistemas de datos.
3. Son muy aplicables para sistemas en tiempo real.
1. It's easy to ...
2. This guide provides..
3.You'll learn ...
