2009/5/22 Brandon Metcalf <brandon@geronimoalloys.com>:
> That does help. So, in my example of a table consisting of rows for
> each periodic table element, the atomic number would suffice as a
> unique key since, well, it's unique and not going to change. Right?
Well, yes :)
At least that's my opinion and experience.
Now, having said that, you're good until physics doesn't question some
of the math there, and doesn't change that number for some reason ;)
--
GJ