Data Flow Diagrams vs Regular Flow Charts

Subject: Data Flow Diagrams vs Regular Flow Charts
From: Tony Markos <ajmarkos -at- yahoo -dot- com>
To: "TECHWR-L" <techwr-l -at- lists -dot- techwr-l -dot- com>
Date: Sat, 26 Mar 2005 06:53:04 -0800 (PST)

Oja (Kelly):

You asked about the differences between Data Flow
Diagrams and regular [logic] flowcharts.

As someone else posted, one can say that they kind of
look the same. However, that is where the similarity
stops; the two have radically different application.

Logical flow charts are primarily a mind-concentrating
device used to nail down a detailed design.

Also, those of us in the analysis community commonly
speak of "level-of-abstraction" when discussing
diagramming techniques. Logic flow charts are
primarily a lower-level of abstraction technique.

Data Flow Diagrams are primarily a mind-expanding
technique used in analysis to rigorously discover
essential end-user tasks and their interrelationships.
Also, Data Flow Diagrams are a higher-level-of
abstraction technique.

Bottom-line: Think discovery vs design - two
completely different endeavors.

Tony Markos
Show Me Your DFDs

Do you Yahoo!?
Yahoo! Small Business - Try our new resources site!


Accelerate the document lifecycle with full online discussions and unique feedback-management capabilities. Unlimited, efficient reviews for Word
and FrameMaker authors. Live, online demo:

You are currently subscribed to techwr-l as:
archiver -at- techwr-l -dot- com
To unsubscribe send a blank email to leave-techwr-l-obscured -at- lists -dot- techwr-l -dot- com
Send administrative questions to lisa -at- techwr-l -dot- com -dot- Visit for more resources and info.

Previous by Author: RE: Purpose Driven Technical Writing
Next by Author: Why No One Asks For Data Flow Diagrams
Previous by Thread: RE: problem with a link from a web page to an ftp server
Next by Thread: RE: Data Flow Diagrams vs Regular Flow Charts

What this post helpful? Share it with friends and colleagues:

Sponsored Ads