What about NULLs ? Is it allowed or not ? I recently discovered on Wikipedia htt... | Hacker News

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		painchoc on June 18, 2021 \| parent \| context \| favorite \| on: What does First Normal Form mean? What about NULLs ? Is it allowed or not ? I recently discovered on Wikipedia https://en.wikipedia.org/wiki/First_normal_form that it should not be.

goto11 on June 21, 2021 [–]

They should not be allowed according to C.F.Date, but this is quite a controversial opinion. E.F.Codd who invented the relational model thinks nulls are fine.

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