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Home -> Community -> Usenet -> comp.databases.theory -> Re: Views for denomalizing
On 2 Feb 2005 22:34:47 -0800, lauri.pietarinen_at_atbusiness.com wrote:
>1NF is just another way to say that all data must be perceived as
>relations,
That is the Information Principle, not 1NF.
The Information Principle is a prerequsite to normalization.
IMO 1NF is supefluous and only exists due to historical reasons. Normalization starts with 2NF.
>and relations, by definition do NOT have duplicate tuples (or rows, in
>SQL-speak).
Nor nulls.
Regards Received on Fri Feb 04 2005 - 08:03:18 CST
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