Re: Table Design for Hierarchical Data

From: Yeb Havinga <yebhavinga(at)gmail(dot)com>
To: Leif Biberg Kristensen <leif(at)solumslekt(dot)org>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: Table Design for Hierarchical Data
Date: 2010-04-12 15:37:58
Message-ID: 4BC33E56.3000704@gmail.com
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Leif Biberg Kristensen wrote:
> On Monday 12. April 2010 16.57.38 Rob Sargent wrote:
>
>> Believe me: "ego-ma-pa" will correctly define genealogical relationships
>> (at least among humans).
>>
>
> Yes, but a family tree is not a hierarchical tree as defined in database
> theory. Believe me: I'm a genealogist.
>
The last sentence is almost like the 'proof by authority' from 36
methods of mathematical proof, see e.g.
http://jwilson.coe.uga.edu/EMT668/EMAT6680.F99/Challen/proof/proof.html.

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