| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
Home -> Community -> Usenet -> comp.databases.theory -> Re: Normalization Question
Em Fri, 21 Jan 2005 10:27:57 -0600, Dawn M. Wolthuis escreveu:
> It is such a shame that you have to guess at future cardinality
> right up front when designing a relational structure, eh? Wouldn't
> it be great if we could design at a level where a change in
> multiplicity, like a change in size, type, or constraints, could be
> handled without a changing the logical model of the data?
Then it ain't a logical model, but only a draft.
Dawn, have you to troll your ignorance around?
If we wouldn't finish the draft into a model, we'd have to program around it instead of benefitting from the relational data independence declarativeness.
-- Leandro Guimarães Faria Corcete Dutra <leandro_at_dutra.fastmail.fm> Maringá, PR, BRASIL +55 (44) 3025 6253 http://br.geocities.com./lgcdutra/ +55 (44) 8803 1729 Soli Deo Gloria! +55 (11) 9406 7191Received on Fri Jan 21 2005 - 23:16:19 CST
![]() |
![]() |