[OSM-legal-talk] Extent of share alike?

Iván Sánchez Ortega ivan at sanchezortega.es
Mon Nov 2 13:08:53 GMT 2009

El Lunes, 2 de Noviembre de 2009, David Vaarwerk escribió:
> However, my question is, how far does the share alike
> section of the Creative Commons licence go. I want to share the map data
> with OSM but not the other sections of the work.

Then you double-license the map data: one version goes OSM under CC-by-sa or 
ODbL, the other version goes (c) into your guide. Share-alike does *not* 
apply to your work, only to one distribution of your work.

Problems may arise only when you use already existing OSM data in your guide. 
In this case, the share-alike component of either CC-by-sa or ODbL would 
apply to the data set it is being put into. Most likely, you would have to 
share alike all your geographical data. Both CC-by-sa and ODbL don't apply to 
collections, so you don't have to share alike any databases that are separate 
from the one containing OSM data.

Hope that helps,
Iván Sánchez Ortega <ivan at sanchezortega.es>

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