I am working on a design where a location for something can have:
Fully qualified address with even building names, room numbers, and
booth numbers.
**-OR-**
GPS location
**-OR-**
Both
Other than triggers, is there a way to enforce this using tables and
primary keys?
I imagine an address table, and then
either a some sort of intermediate table, in a one to many
relationship, GPS to Addresses,
or the correct columns in the address table.
Either way, I don't see a normal way to enforce EITHER or BOTH without a
trigger.
Thanks in Advance.
