Re: cdt glossary - TABLE

mAsterdam wrote:
> Lists are ordered by definition
> (http://en.wikipedia.org/wiki/List), so
>
> "the table header is an (unordered) set of column names"
>
> directly contradicts
>
> "the table header consists of a list of column names"
>
> I don't have a problem listing contradictory definitions
> if they are in use somewhere (in database context).
> However, this is the first time I see a table header
> with *un*ordered column names mentioned.
> Are you sure? Could you provide some background?

I thought the whole idea of the relational model was to abstract away from physical things like the order of the columns, which isn't relevant to data management.

I think it's done this way in one of Date's books, maybe the Third Manifesto?

Paul. Received on Mon Jul 11 2005 - 00:07:46 CEST