Messy data models (Re: Visualize database schema)

From: Wolfgang Keller <feliphil(at)gmx(dot)net>
To: pgsql-general(at)postgresql(dot)org
Subject: Messy data models (Re: Visualize database schema)
Date: 2012-08-17 13:07:42
Message-ID: 20120817150742.901788f145841f73138f20f4@gmx.net
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> Concerning auto-layout, most if not all tools I have used up to now
> make a mess for anything that is not dead simple.

If a data model can not be reasonably "untangled" by an auto-layout
algorithm (such as e.g. Graphviz) for display as a human-readable graph,
wouldn't that mean that this model is a mess from the modeling point of
view?

In fact, shouldn't reasonably well-designed data models at least mostly
follow SER principles? In that case, they could be displayed
essentially as a tree.

Could the "messy-ness" (or not) of the display of a data model (given
a standard alorithm such as Graphviz) be used as a criterion to judge
whether the model is actually well-structured?

Sincerely,

Wolfgang

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