The principles of database design, or, the Truth is out there

Bad luck if you don’t yet have (or know) your national ID.

National id is not something issued at birth in the country I live in. It’s something applied for at a certain age.

Where I live there’s no such thing as national ID. There’s a few documents that can be used as such depending on the purpose, and some of those change the number on every update!

Never trust something outside your system to be stable.