Received: from localhost (maia-3.hub.org [200.46.204.184])
	by postgresql.org (Postfix) with ESMTP id 2367E9FB64F
	for <pgsql-sql-postgresql.org@postgresql.org>;
	Mon, 23 Apr 2007 07:18:51 -0300 (ADT)
Received: from postgresql.org ([200.46.204.71])
	by localhost (mx1.hub.org [200.46.204.184]) (amavisd-maia, port 10024)
	with ESMTP id 85256-09 for <pgsql-sql-postgresql.org@postgresql.org>;
	Mon, 23 Apr 2007 07:18:37 -0300 (ADT)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.4
Received: from interscan.indicator.com (mail.indicator.be [193.121.199.3])
	by postgresql.org (Postfix) with ESMTP id 41F099FB631
	for <pgsql-sql@postgresql.org>; Mon, 23 Apr 2007 07:18:39 -0300 (ADT)
Received: from webaccess.indicator.be ([10.100.1.7]) by
	interscan.indicator.com with InterScan Message Security Suite;
	Mon, 23 Apr 2007 12:04:49 +0200
Received: from DOMEXT-MTA by webaccess.indicator.bewith Novell_GroupWise;
	Mon, 23 Apr 2007 12:18:35 +0200
Message-Id: <462CA410.A3DD.0030.0@indicator.be>
X-Mailer: Novell GroupWise Internet Agent 7.0.1 
Date: Mon, 23 Apr 2007 12:18:25 +0200
From: "Bart Degryse" <Bart.Degryse@indicator.be>
To: <pgsql-sql@postgresql.org>
Subject: Re: We all are looped on Internet: request+transport  =    invariant
References: <14110647859.20070413105812@narod.ru><20070413150936.GA31517@phl
	ogiston.dyndns.org><1684192906.20070419090827@narod.ru><20070419134808.GB14
	187@phlogiston.dyndns.org><20070419134808.GB14187@phlogiston.dyndns.org><81
	4860828.20070420120819@narod.ru><4628BCC8.A3DD.0030.0@indicator.be><1453364
	9203.20070420172127@narod.ru><462C7282.A3DD.0030.0@indicator.be><918607984.
	20070423130717@narod.ru>
In-Reply-To: <918607984.20070423130717@narod.ru>
Mime-Version: 1.0
Content-Type: multipart/alternative;
	boundary="=__Part644303E1.0__="
X-imss-version: 2.046
X-imss-result: Passed
X-imss-approveListMatch: *@indicator.be
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Spam-Status: No, hits=1.116 tagged_above=0 required=5 tests=AWL=-0.661,
	BAYES_50=0.001, FORGED_RCVD_HELO=0.135, HTML_MESSAGE=0.001,
	UNPARSEABLE_RELAY=0.001, URIBL_SBL=1.639
X-Spam-Level: *
X-Archive-Number: 200704/215
X-Sequence-Number: 28215

--=__Part644303E1.0__=
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit

I'll continue with the analogy
It is not impossible to attach wings to a sportscar. When you do, you
will probably get the sportscar flying.
However:
1. Why would you even try, if airplanes (which are designed from
scratch to fly) already exist. Just use them
2. If you try nevertheless, is getting your car to fly worth the effert
it will cost. It might fly in the end, but it will never be a Phantom
(or whatever plane you prefer). Making something that can fly, requires
you to focus on that from scratch. A car was never designed to fly. So
basically a flying car will still be a car and not a plane.
 
So, since hierarchical databases do exist, why even bother trying to
transform a relational database into something that resembles a
hierarchical database. A real hierarchical will always be better suited
to do the job than your addition to a relational database will be,
simply because the hierarchical database was designed from scratch to do
just that.


>>> Dmitry Turin <sql4-en@narod.ru> 2007-04-23 12:07 >>>
Good day, Bart.

> A hierarchical is specialized in managing data which is
> hierarchically structured, while a relational database is not.

You don't answer to question
(why is impossible to make addition for relational database?).


Dmitry Turin
http://html6.by.ru ( http://html6.by.ru/ )
http://sql4.by.ru ( http://sql4.by.ru/ )
http://computer2.by.ru ( http://computer2.by.ru/ )


--=__Part644303E1.0__=
Content-Type: text/html; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Content-Description: HTML

<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-15">
<META content="MSHTML 6.00.2800.1264" name=GENERATOR></HEAD>
<BODY style="MARGIN: 4px 4px 1px; FONT: 10pt Tahoma">
<DIV>I'll continue with the analogy</DIV>
<DIV>It is not impossible to attach wings to a sportscar. When you do, you will probably get the sportscar flying.</DIV>
<DIV>However:</DIV>
<DIV>1. Why would you even try, if airplanes (which are designed from scratch to fly) already exist. Just use them</DIV>
<DIV>2. If you try nevertheless, is getting your car to fly worth the effert it will cost. It might fly in the end, but it will never be a Phantom (or whatever plane you prefer). Making something that can fly, requires you to focus on that from scratch. A car was never designed to fly. So basically a flying car will still be a car and not a plane.</DIV>
<DIV>&nbsp;</DIV>
<DIV>So, since hierarchical databases do exist, why even bother trying to transform a relational database into something that resembles a hierarchical database. A real hierarchical will always be better suited to do the job than your addition to a relational database will be, simply because the hierarchical database was designed from scratch to do just that.</DIV>
<DIV><BR><BR>&gt;&gt;&gt; Dmitry Turin &lt;sql4-en@narod.ru&gt; 2007-04-23 12:07 &gt;&gt;&gt;<BR>Good day, Bart.<BR><BR>&gt; A hierarchical is specialized in managing data which is<BR>&gt; hierarchically structured, while a relational database is not.<BR><BR>You don't answer to question<BR>(why is impossible to make addition for relational database?).<BR><BR><BR>Dmitry Turin<BR><A href="http://html6.by.ru/">http://html6.by.ru</A><BR><A href="http://sql4.by.ru/">http://sql4.by.ru</A><BR><A href="http://computer2.by.ru/">http://computer2.by.ru</A><BR><BR></DIV></BODY></HTML>
--=__Part644303E1.0__=--