Options for eliminating NULLable columns from a DB model (in order to avoid SQL's three-valued logic)?

Question

Some while ago, I\'ve been reading through the book SQL and Relational Theory by C. J. Date. The author is well-known for criticising SQL\'s three-valued logic (3VL).

Answer 1

I haven't read it, but there's an article called How To Handle Missing Information Using S-by-C on the the Third Manifesto website that's run by Hugh Darwen and C.J. Date. This isn't written by C.J. Date, but I'd assume that since it's one of the articles on that website it's probably similar to his opinions.