Jeff Moden (7/12/2010)
Crud... the site you referenced wants to download to a CD and I won't have access to a computer that has a burnable CD or DVD for at least another week. I hope someone else can come up with a facsimile of the original document but, if they don't, I'll do the download next week. Thanks for the leg up, David.
No, it's actually worse than that: the CD (or DVD) is a local file reference - in effect it wants you to insert the CD in your drive so that it can read the data from there! You may still be able to buy a copy of those conference procedings from the IEEE, but it may no longer be available and anyway if it is available it will probably cost an arm and a leg; I'm pretty sure that several university libraries in the US will have a copy, but more won't and some are not at all helpful about access anyway. Besides, as David pointed out, the ICDE paper was not the original version.
However, all is not lost: there is an accurate (as far as I can remember :crying: - must be getting senile) version on the web, at http://www.cse.ohio-state.edu/~sgomori/570/coddsrules.html. (I have no idea why Gomori teaches it in his File Structure and Design course instead of in his Intro to Database Systems! I don't know the guy, so I haven't asked him.)
(edit) But watch out for rule 6: there are some problems, which Codd addressed later.
Tom