Oh yeah? How about SCD? I bet all ssn are in an SCD.
Comment on How does this pic show that Elon Musk doesnt know SQL?
ExFed@lemm.ee 5 days agoIf it’s used as an identifier to link together rows from different tables. Also known as “joining” tables. SSN (with birthdate) is a unique identifier, and so it’s natural to choose as a primary/foreign key.
SloppyPuppy@lemmy.world 5 days ago
spark947@lemm.ee 5 days ago
It really is baffling trying to make sense of what he is saying. It’s like the only explanation that makes any sense at all is that he has no idea what he is talking about. Even if he knew just cursory knowledge about database cardinality you wouldn’t say stuff so stupid.