From: Dmitry Turin <sql4-en@narod.ru>
To: pgsql-sql@postgresql.org
Subject: un-triviality is saved
Date: Thu, 12 Apr 2007 14:23:20 +0300
Message-ID: <17323140312.20070412142320@narod.ru> (raw)
In-Reply-To: <20070411134953.GC22510@phlogiston.dyndns.org>
References: <20070411134953.GC22510@phlogiston.dyndns.org>
>What does this do that inheritance doesn't already do? I don't think I see anything.
- So, we have proved, that all, what you offer to make on your a-a-a...
Fortran, is possible to make on assembler.
- First, I know this without you, second, speech was not about that.
Newness is not "what", newness is "how" !
As to processing data,
new way allow to think in natural terms of tree, instead in artificial
terms of Decart's production and PL-extension for SQL.
As to communication,
new way allow to extract XML from database directly, without any
gasket (php, etc) - that is VERY important to untrained, inexperienced user.
Direct way open gates (doors) for applied specialists !
>> We speak about database, thus what user wants to do is
>> predetermined partly - there are at least two things: database and
>> visualizer (browser is only one case).
>This sounds to me entirely like a user-interface problem.
Situation is system.
And as any item, it has system's characteristics.
What's about difficulty:
difficulty-of-request + difficulty-of-transportation = invariant.
If you make request without transport's possibility,
then you must to enter one more language!
It's very, very bad for un-experienced user.
And the main: un-triviality (un-banality) is saved !!!
you are forced to get this un-triviality in other language.
But in addition to un-triviality, you have place of dock
between SQL and other language.
Representation of data as tree (instead of as matrix) is not aim itself,
it's sideline-result.
---
>We don't need to make SQL more complicated (and less relational)
There are two question: "more complicated" and "less relational".
First:
SQL doesn't loss and doesn't gain any functional characteristics.
SQL does not become more complicated.
Second:
SQL doesn't loss and doesn't gain any relational characteristics, they are saved.
SQL does not become less relational.
>point of SQL was to move away from the hierarchical model
"Was", pay attention.
It doesn't mean, that it should be always.
Let's distinguis between two characteristics: harmness and orthodoxality.
Orthodoxality is not argument, i think.
AS> inexperienced user are willing to learn
What about user want to learn, user think:
what is the least, so is the best.
Minimum quantity of tools is the best.
This is fact instead of opinion.
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To: pgsql-sql@postgresql.org
Cc: sql4-en@narod.ru
Subject: Re: un-triviality is saved
In-Reply-To: <17323140312.20070412142320@narod.ru>
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