2015-08-17 6:04 GMT-03:00 Martin Koppenhoefer <[email protected]>:
> > > sent from a phone > > > Am 17.08.2015 um 08:28 schrieb Colin Smale <[email protected]>: > > > > OSM IDs are too volatile, and IIRC there were objections to putting > "foreign keys" (like shop branch numbers) into OSM on the grounds that > someone would need to maintain that link. > > > Some people are adding tax identification numbers for businesses, the tag > is ref:vatin > but the number is typically referring to an operator. Of course this has > to be maintained as well. > > I have added many ref:vatin tags in my area. They are easy to survey and verify: shops either have them in a sign visible from outside, or in a sign inside near the point of sale, or they are about to get into trouble with the tax office. They can perhaps serve as foreign keys. -- Nicolás
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