Hi, I have a question regarding the application of the ODbL. Currently, I am evaluating the obligations using the OSM Data for a client application. My question regards the storage of OSM Data (data under the ODbL) in a proprietary format (the format is copyrighted and not available under an open and/or free license). My understanding is that using substantial parts of the database and re-arrangement of the OSM data creates a Derivative Database, which requires to be provided under the terms of ODbL (Section 4.4 ODbL). My understanding so far is further, that this applies, even if the Contents are not changed and only the structure of the database is changed. What I am struggling to understand is how this works in case of a proprietary format (format of the database), see Section 2.2.a ODbL? Likely this question was raised before. Unfortunately, I was not able to find anything specific so far. I found this “Use-Case” (http://wiki.openstreetmap.org/wiki/Open_Data_License/Use_Cases#Using_OSM_data_in_a_computer_game_together_with_other_data_sources), but the answer does not seem to really help say how the “open derivative database” works with the proprietary format. If anybody can help me with understanding this more clearly or point me to a previous discussion of this topic, that would be great. Thank you in advance. Matthias Schmid
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