> The "natural key" for a (natural) person is compound: full name and mother's full name, plus date, time and place of birth. All it would take for a Bobby Tab

> The "natural key" for a (natural) person is compound: full name and mother's full name, plus date, time and place of birth. All it would take for a Bobby Tables[0] moment is a mother to have twins delivered by caesarean and given the same name... The same name thing has already been done[1]. [0] https://xkcd.com/327/ https://xkcd.com/327/ [1] https://www.walesonline.co.uk/news/real-life/mum-gives-twin-girls-exact-29686859 https://www.walesonline.co.uk/news/real-life/mum-gives-twin-...