On 18/08/12 04:33, David Johnston wrote:
-Original Message-
From: pgsql-general-ow...@postgresql.org [mailto:pgsql-general-
ow...@postgresql.org] On Behalf Of Wolfgang Keller
Sent: Friday, August 17, 2012 9:08 AM
To: pgsql-general@postgresql.org
Subject: Messy data models (Re: [GENERAL
> > 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.
>
> No - and what the heck are "SER principles"?
Structured Entity Relationship model.
It means that the dependency graph
Short answer: no. Even with a good auto-layout, nothing (up to now) beats a
human made one because the latter will incorporate semantic which is not
available to the modeling tool; for example, positioning, spacing and
routing of relations will respect some sense of aesthetic and organization
that
> -Original Message-
> From: pgsql-general-ow...@postgresql.org [mailto:pgsql-general-
> ow...@postgresql.org] On Behalf Of Wolfgang Keller
> Sent: Friday, August 17, 2012 9:08 AM
> To: pgsql-general@postgresql.org
> Subject: Messy data models (Re: [GENERAL] Visuali
> 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
