Open Database License

The Open Database License (ODbL) is a copyleft ("Share Alike") license agreement intended to allow users to freely share, modify, and use a database while maintaining this same freedom for others.

ODbL is published by Open Data Commons, part of the Open Knowledge Foundation.

The OpenStreetMap (OSM) project completed the move from a Creative Commons license to ODbL in September 2012 in an attempt to have more legal security and a more specific license for databases rather than creative works.

Other projects using ODbL include OpenCorporates,Open Food Facts, and Paris OpenData.

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