>>2) Use a GUID. > >This is what I would suggest. It does not require compound primary keys and no maintenance if more location get added > >I believe there is a API call to get the GUID
See Re: GUID Message #541174 or Re: Smallest GUID Making Code Ever Message #638589.
OTOH GUIDs are a little slow and cumbersoome for my taste. Depends on your needs I guess.
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