# Re: In an RDBMS, what does "Data" mean?

Date: Mon, 14 Jun 2004 23:28:01 +0100

Message-ID: <d4NwlmExZizAFwir_at_thewolery.demon.co.uk>

In message <40c81648_at_post.usenet.com>, x <x-false_at_yahoo.com> writes

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*>
**>
**>"Dawn M. Wolthuis" <dwolt_at_tincat-group.com> wrote in message
**>news:ca89b4$gj9$1_at_news.netins.net...
**>> "Anthony W. Youngman" <wol_at_thewolery.demon.co.uk> wrote in message
**>> news:zHiLa9IExOxAFw1d_at_thewolery.demon.co.uk...
**>
**>> > LOOK at the subject of this thread again. It is an AXIOM of relational
**>> > theory that data comes in tuples. Show me that that's true! And because
**>> > it's an axiom, mathematics itself tells you that logic CAN not give you
**>> > an answer!
**>>
**>> Excellent, excellent, point. I would love to hear if there is any
**>> disagreement on this point. If not, then perhaps we can work this into
**>the
**>> glossary somehow related to "relational theory" or "axioms".
**>> Cheers! --dawn
**>
**>Why do you keep saying "relational *THEORY*" ?
*

Because it IS a THEORY (see below).

*>
**>The title of Codd's 1970 ACM paper is "A Relational *MODEL* of Data for
**>Large Shared Data Banks".
**>
**>The title of Codd's 1979 ACM paper is "Extending the Database Relational
**>*MODEL* to Capture More Meaning".
**>
**>What meaning of *theory* do you have in mind ?
**>
*

Not the mathematical meaning of "a proposition awaiting proof to become
a theorem", but the scientific meaning of "a bunch of axioms and
consequent theorems". Which happens to be the same meaning as "model".

I think, unfortunately, the use of the word "theory" is now common usage...

Cheers,

Wol

-- Anthony W. Youngman - wol at thewolery dot demon dot co dot uk HEX wondered how much he should tell the Wizards. He felt it would not be a good idea to burden them with too much input. Hex always thought of his reports as Lies-to-People. The Science of Discworld : (c) Terry Pratchett 1999Received on Tue Jun 15 2004 - 00:28:01 CEST