From: Achilleas Mantzios <achill@matrix.gatewaynet.com>
To: pgsql-sql@postgresql.org
Subject: Re: Table Design for Hierarchical Data
Date: Wed, 7 Apr 2010 10:39:41 +0200
Message-ID: <201004071139.42140.achill@matrix.gatewaynet.com> (raw)
In-Reply-To: <4BBC3D14.8080401@gmail.com>
References: <n2i5ab13581004061033j4ed25734xd0504cb95a1fc092@mail.gmail.com>
<201004071000.15529.achill@matrix.gatewaynet.com>
<4BBC3D14.8080401@gmail.com>
Στις Wednesday 07 April 2010 11:06:44 ο/η Yeb Havinga έγραψε:
> Achilleas Mantzios wrote:
> > You could also consider the genealogical approach, e.g.
> >
> >
> > The parents of any node to the root, i.e. the path of any node to the root are depicted as
> > parents[0] : immediate parent
> > parents[1] : immediate parent of the above parent
> >
> What I have more than one parent?
Then it is no longer neither a tree, nor a hierarchical structure, but rather a graph.
This a totally different problem.
>
> regards,
> Yeb Havinga
>
>
--
Achilleas Mantzios
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Subject: Re: Table Design for Hierarchical Data
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