[OSM-talk] Combining OSM data and my own data (CC-BY 4.0 license)

Michael Collinson mike at ayeltd.biz
Fri Jun 11 10:15:52 UTC 2021

Adding to Simon's comments, you might consider switching your own 
database to ODbL or dual licensing under both, (as one of the main OSM 
license architects, I have been out of things for a while but I can't 
see any obvious issues with the dual approach). Depending on what you 
are personally comfortable with, ( a very important factor!), ODbL may 
be more appropriate for you as it IS designed specifically for databases.


On 2021-06-11 11:10, Simon Poole wrote:
> Essentially the OSM derived parts need to remain ODbL licensed, 
> depending on the granularity of the "enriching" this might or might 
> not effect the whole or just the OSM derived part of your database.
> The later would not cause issues with most licenses, as they typically 
> support a "collection" concept which allows separate licensing of the 
> constituent parts (as the ODbL does), but CC BY 4.0 is viral^2 for 
> databases and contains clauses that are substantially stricter than 
> anything in the ODbL, so if you are publishing in the EU the answer is 
> likely that it wont work.
> See 
> https://wiki.osmfoundation.org/wiki/Licence/Community_Guidelines/Collective_Database_Guideline_Guideline 
> and the other guidelines for more information.
> Simon
> Am 11.06.2021 um 10:27 schrieb Emilio López via talk:
>> Dear all,
>> I have a license question. My database is open and free by CC-BY 4.0 
>> license. I would like to integrate some OSM data in my database in 
>> order to enrich it.
>> Could I continue using the CC-BY license (of course, attributing OSM) 
>> for my new database?
>> Thank you very much.
>> Best regards,
>> Emilio
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