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What's the point of having a state field at all? Isn't there a unique mapping between zip code and state? Redundancy. The postal service can usually deliver if
by lincolnq 17y ago
What's the point of having a state field at all? Isn't there a unique mapping between zip code and state?
Redundancy. The postal service can usually deliver if you screw up one of city, state, and zip code. If you got rid of city/state then any error in zip code would result in failure to deliver.
- lutorm 17y agoI only proposed getting rid of the state field, not the city. I have no idea whether cities share zip codes, but that seems a lot more probable than states sharing zip codes. And even if they did, unless that zip code also had two cities named the same, it would still be uniquely identify an address.