At least your employee has a last name. I had an Indonesian hacker in my team, he had no last name...
It is all about assumptions. OP assumed nobody would be called Null. MusicBrainz index assumes no band chose to name themselves "Various Artists" or "[unknown]". These are advisable but how to not assume that people have last names?
It is all about assumptions. OP assumed nobody would be called Null. MusicBrainz index assumes no band chose to name themselves "Various Artists" or "[unknown]". These are advisable but how to not assume that people have last names?