Re: Dreaming About Redesigning SQL

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От Christopher Browne
Тема Re: Dreaming About Redesigning SQL
Дата
Msg-id bm59fh$issbt$1@ID-125932.news.uni-berlin.de
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Ответ на Dreaming About Redesigning SQL  (seunosewa@inaira.com (Seun Osewa))
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A long time ago, in a galaxy far, far away, dwolt@iserv.net (Dawn M. Wolthuis) wrote:
> Good question.  Although I would want to move away from relational
> databases too, if there is an RDBMS and one wants to query it, what
> would I aim for?  If you look at XQuery, you will see an example of
> what I would definitely NOT aim for.  Although the user of such a
> language might very well be a technical person, instead of starting
> with mathematics (relational calculus, relational algebra) I would
> suggest starting with language.  The mathematics of language is more
> complex than the mathematics of relations, particularly simple
> relations (such as 1NF tables).

No, that _very much_ gets things backwards.

You need to have a clearly defined model of how the data is to be
manipulated before it makes any sense to try to make up a language.
-- 
output = reverse("moc.enworbbc" "@" "enworbbc")
http://cbbrowne.com/info/rdbms.html
To iterate is human; to recurse, divine.


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