Re: c.d.theory glossary - RELATION

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"mAsterdam" <mAsterdam_at_vrijdag.org> wrote in message news:40925ec4$0$574$e4fe514c_at_news.xs4all.nl...

> This is where a difference come in:
>
> In ER-modelling the parts of the model are
> abstractions of (real or fantasized) world _things_
> and associatons between them, vs.
> the relation values in a relational model represent _facts_
> (or beliefs) about a (real or fantasized) world.
>
> In short
> RM.REPRESENT yes, *facts*.
> ER.REPRESENT yes, *things*.
>

Do some of the _facts_ about a (real or fantasized) world tell something about _things_ in a (real or fantasized) world ?

If yes, those _things_ are explicitly or implicitly represented in relational model ? And by what ? Why not otherwise.

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