Do I understand you correctly if I parapharse your post as "attributes are
only useful for unique identifiers?" That's as good a "rule of thumb" as
any other, I guess, but it is a much more radical one than any I have
heard before. It seems just as arbitrary as any other rule of thumb I've
heard.
Paul Prescod - http://itrc.uwaterloo.ca/~papresco
"You have the wrong number."
"Eh? Isn't that the Odeon?"
"No, this is the Great Theater of Life. Admission is free, but the
taxation is mortal. You come when you can, and leave when you must. The
show is continuous. Good-night." -- Robertson Davies, "The Cunning Man"