Re: Codd provided appropriate mathematics ... (was Re: Relational and MV (response to "foundations of relational theory"))

"Dawn M. Wolthuis" <dwolt_at_tincat-group.com> wrote in message news:c1ocbm$ldq$1_at_news.netins.net...
> Your last statement, Eric, is really the point. I think the original
> idea was that relational database theory was tied to mathematical
> relations. It is now at the point where statements that are true of
> mathematical relations such as the fact that relations are ordered,
> are now considered "obviously" untrue in the database relational
> model. Ah well, such is the nature of language. --dawn

If I may make a correction: in mathematical relations, the attributes are ordered instead of named. The elements are unordered in both models.

I consider this difference relatively minor.

Marshall Received on Sat Feb 28 2004 - 03:40:17 CET