Re: Another view on analysis and ER
Date: Wed, 12 Dec 2007 20:35:00 GMT
"rpost" <rpost_at_pcwin518.campus.tue.nl> wrote in message
> Jon Heggland wrote:
> >Straw man. I don't believe I've said anything in general about the
> >qualities of graphical languages versus textual. I merely observed that
> >this guy's assumption that analysis = data modeling = drawing something
> >is dubious.
> I agree. I wasn't attacking you. However I believe it is just as
> to notice that many formally inclined computer scientists work with an
> (often tacit) assumption that anything graphical is inherently inexact,
> informal, merely illustrative in nature.
A diagram does essentially the same thing that a model does: it omits or
glosses over some presumably unimportant details, in order to highlight
certain features of the thing being modeled. Many of the harshest critcisms
of diagrams that I've read in this newsgroup are based on the idea that a
good model ought to serve as a blueprint.
Some models serve as blueprints. Some don't. Diagrams generally are not
detailed enough to erve as blueprints. But they are useful communication
Some models serve as blueprints. Some don't. Diagrams generally are not detailed enough to erve as blueprints. But they are useful communication tools, nevertheless.
Received on Wed Dec 12 2007 - 21:35:00 CET