[OSM-talk] OSM relation ID property in Wikidata

[Peter Wendorff]

Unfortunately I'm too busy to investigate how much elements in OSM
change their meaning instead of deleting the old and creating the new
object.

In addition your "fooling the concept" is not correct. If a supermarket
is abandoned, and was tagged as a building + name + shop=supermarket,
you would not delete the whole object and add a new object with the
building tag alone, right?

regards
Peter

Am 07.05.2013 10:25, schrieb Stefan Keller:
> 2013/5/7 Peter Wendorff <wendorff at uni-paderborn.de>:
>> Look what happens in OSM all the time: POIs are moved slightly to match
>> aerial images - following your definition that should be another ID now
> 
> No, That's one of the nice properties of ids without coordinates!
> To me it would remain the same - except when a tool or the user is
> fooling the concept.
> At least the tools you can debug.
> 
> Yours, Stefan
> 
> 2013/5/7 Peter Wendorff <wendorff at uni-paderborn.de>:
>> Am 07.05.2013 09:58, schrieb Stefan Keller:
>>> Hi,
>>>
>>> You wrote:
>>>> - it's roughly in that bounding box (e.g. the city or a given part of
>>>
>>> A soon as you use the word "roughly" - the id approach is doomed to fail.
>>> According to OO and database technology an id is a well-defined
>>> surrogate with a well-defined data type.
>>
>> Then it's not the same "permanent" we talk about.
>> Look what happens in OSM all the time: POIs are moved slightly to match
>> aerial images - following your definition that should be another ID now
>> - but that's not what people usually want if they request for a
>> permanent ID, similar to changes from node to polygon to multipolyogn etc.
>>
>> "It's in that bounding box" nevertheless would have been the better
>> wording, (equalling "is roughly at that position, so if you want to use
>> roughly/estimation, it's possible even then).
>>
>> regards
>> Peter
>