V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DFD
       Data Flow Diagram / DatenFlussDiagramm (CASE, SA)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DFD
       Deutsches FernerkundungsDatenzentrum (org.)


The Free On-line Dictionary of Computing (30 December 2018):

Data Flow Diagram
DFD

    A graphical notation used to describe how data
   flows between processes in a system.  Data flow diagrams are
   an important tool of most structured analysis techniques.

   (http://smartdraw.com/resources/centers/software/dfd.htm).

   (2003-05-17)