Bad analogy.
This would be more like the property management having a record of what apartments are rented, and having a second list of who is renting apartments (but not which one), and the landlord wanting to know who is renting apartment 420 so they can draw up eviction papers.
and the one that keeps getting slept on for some reason, watch breakpoints - stop when
foois changed. Great for figuring out what is screwing with your data whenfoomysteriously changes