> How is it possible that the db contains records with such a vital datum missing? This is a weird question. How would you even go about finding out an unknown

> How is it possible that the db contains records with such a vital datum missing? This is a weird question. How would you even go about finding out an unknown date of birth? Especially when it happened > 50 years ago and half the world away. For whom is it "vital" ? Will it prevent me from going about my daily business? See also: Why are so many people born on the 1st of January? It's a statistically impossible number. A: Because they know their approximate year of birth, only.