This is not a semantic question about if Edmonton is a county of a city. This 
is more a technical matter related to OSM database design and sql tools. It is 
not well documented in the wiki.

Discussions on the talk_fr list indicate that we have to duplicate polygons for 
each level for entities such as Edmonton .

 If you want to dig more about that and nobody can answer these questions on 
the talk-ca list, I suggest that you try on talk list.


 
Pierre 



>________________________________
> De : James Ewen <[email protected]>
>À : talk-ca <[email protected]> 
>Envoyé le : Vendredi 9 novembre 2012 21h44
>Objet : Re: [Talk-ca] Edmonton / Strathcona boundary limits
> 
>On Fri, Nov 9, 2012 at 7:20 PM, Paul Norman <[email protected]> wrote:
>
>> In BC everywhere is part of a regional district (our admin_level=6). We
>> don't have counties.
>
>We don't have counties in Alberta either... the county act was
>repealed in the mid 90's, but a number of the municipalities still use
>the term county in their name. Saskatchewan also does not have
>counties, but rather rural municipalities. Rural municipalities in
>Saskatchewan and Manitoba not only exclude cities, but also towns,
>villages and First Nation's reserves as well.
>
>Interestingly, the State of Virginia also excludes cities from their
>surrounding counties similar to what Alberta does.
>
>Danville, Virginia is defined at admin level 8, with a corresponding
>hole at admin level 6...
>
>http://layers.openstreetmap.fr/?zoom=12&lat=36.58549&lon=-79.37527&layers=B00FFFFFFFFFFFFTFFFFFF
>
>
>-- 
>James
>VE6SRV
>
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