Yeah, that is what I thought.
You have been Googleing like heck but still no easy answer. That is because you have to KNOW the fundamentals of the subject before you can answer the quesiton.
I might as well ask a pet ferret about the differences between 2VL and 3VL and why Codd and Date disagreed and why.
Good morrow to you.
You are exposed forever as an ignorant bully whose only stock in trade is insults. Don’t bother to deny it, I need only quote our conversation verbatim to prove my point.
Which I will do if need be.