Data Flow Diagram Generator

A data flow diagram (DFD) is a graphical representation of how data moves through a system. It shows external entities that supply or receive data, processes that transform data, data stores where data is held, and labeled arrows representing data flows between them. SciFig's data flow diagram generator creates DFDs from a plain-language description of your system using standard DFD notation.

Identify your system's external entities, the processes that handle data, the data stores involved, and the data that flows between them. SciFig's DFD diagram maker takes this description and generates a correctly structured data flow diagram with labeled processes, stores, entities, and flows. You can then edit labels, adjust the layout, and export a publication-ready DFD figure.

A Level 0 DFD — also called a context diagram — shows the entire system as a single process bubble, with all external entities and the data flows between them and the system. A Level 1 DFD decomposes the single bubble into the major internal processes and shows data flows between them and internal data stores. SciFig's data flow diagram generator supports both levels — specify which level you need in your description.

Standard DFD symbols include circles or rounded rectangles for processes, rectangles for external entities (sources and sinks), parallel horizontal lines for data stores, and labeled arrows for data flows. SciFig's DFD diagram maker uses Yourdon-DeMarco notation by default and generates each symbol correctly positioned and labeled according to your system description.

Yes. SciFig's data flow diagram generator is trained on structured systems analysis conventions and produces DFDs that follow standard notation rules — processes labeled with verbs, data stores labeled as nouns, data flow arrows labeled with the data they carry. The result is a data flow diagram accurate enough for academic coursework, research papers, and professional system documentation.

Data flow diagrams are used in software engineering requirements analysis, information systems design, computer science education, systems analysis and design (SAD) courses, and academic research on information systems architecture. SciFig's data flow diagram generator produces DFD figures that meet the standards required in these contexts — from undergraduate assignments to peer-reviewed publications.