> >1. why is the link to the information resource outside the metadata set?
There seems to me to be a fundamental distinction between an
identifier which allows you to distinguish between "equal" instances
and a locator which allows you to access it. Making reference to a
namespace adds indirection (and hence stability) but does not remove
the problem, I think. It just replaces the locator by a pointer to
the namespace in which resolution is achieved. We can resolve the
issue implicitly by making assumptions about co-location (equal
instances are not equivalent as they are in different locations) but
I doubt if that is very satisfactory.
___________________________________________________________________________
Anthony Finkelstein (Prof.) | TEL: 44 171 380 7293 (Direct Dial)
University College London | FAX: 44 171 387 1397
Dept. of Computer Science | EMAIL: [log in to unmask]
Gower Street, | http://www.cs.ucl.ac.uk/staff/A.Finkelstein
London WC1E 6BT | OFFICE: G20, Pearson Building
United Kingdom | PGP Key on request
___________________________________________________________________________
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|