[OSM-legal-talk] use OSM data to select proprietary data

[matthias.straetling at buerotiger.de]

>
> existing OSMF community guidelines suggest spatial operations like
> ST_Difference() and ST_Intersection() yield Derivative Databases that
> are subject to share-alike.

Let's take the Collective Database Guideline, you've mentioned:
https://wiki.osmfoundation.org/wiki/Licence/Community_Guidelines/Collective_Database_Guideline_Guideline

"Technically a reference between non-OSM and OSM data can be by a database key or any other method of identifying a specific OSM or non-OSM element that may be used with a database join."

So actually, I just need to create a collective database, put the non-free data in one table and OSM data in another.
For table joining, I'm using ST_Intersects() and I'm fine?

Confusing.