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Sean McGrath wrote:
> [Tim Bray]
>
> >That depends on whether you believe hyperlinks are structure (which is
> generally believed should
> >be marked-up inline) or presentation (which is generally believed
> should be decoupled from
> >content). I tend to the former, obviously, but I suspect this is a
> debate that will outlive us all. -Tim
>
> I suspect they are in the twilight zone between the two in an area the
> database world typically
> calls a "view". i.e. you have physical tabular structure but all
> interactions are performed through
> database "views".
I strongly disagree. Foreign keys in databases are "links" that are just
as concrete and physical as the tables and columns (which is to say, not
very physical at all, just enough to allow optimized queries).
Similarly, it is just as concrete in XML to say that X is related to Y
as to say that X contains Y. That someone else might want to assert that
X relates to Z does not make this assertion a view or style choice. It
is merely extra information that one person has that the other does not.
(or one person's opinion...)
Paul Prescod
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