Weird, everything I've read said the contrary, e.g. https://www.nytimes.com/2003/04/23/business/edgar-f-codd-79-dies-key-theorist-of-databases.html https://www.

Weird, everything I've read said the contrary, e.g. https://www.nytimes.com/2003/04/23/business/edgar-f-codd-79-dies-key-theorist-of-databases.html https://www.nytimes.com/2003/04/23/business/edgar-f-codd-79-...