minus-squareExFed@lemm.eetoNo Stupid Questions@lemmy.world•How does this pic show that Elon Musk doesnt know SQL?linkfedilinkarrow-up10·6 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. linkfedilink
If 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.