[OSM-legal-talk] produced work vs. derivative db

[Michal Palenik]

after reading all the documents/wiki/mailinglist I am still confused:

what forces producers to publish a derivative database and not just
produced work?

usecase:
a user takes a substantial part of osm db, hand modifies it (eg changes
name of a street to correct one, make a new hiking route ...) and then
publishes it as an online tilemap/printed map. claiming it to be a produced
work under a commercial licence.

is it a produced work? 

is it also a derivative database? 
(if so, which odbl clause kicks in to state this?)


thanks

michal
-- 
michal palenik
www.freemap.sk
www.oma.sk
http://wiki.freemap.sk