Open Database License

Open Data Commons' copyleft licence for databases: anyone may share, adapt and use a database as long as adapted versions stay open. OpenStreetMap moved to it in 2012.

Read the specification ↗ opendatacommons.org

Part of the thread On what terms may anyone reuse it? proposes

published by

• Open Knowledge Foundation organization 2004 [src1][src2]
  through Open Data Commons

alternative to

• CC0 standard 2009 [src1][src2]

Sources

• https://en.wikipedia.org/wiki/Open_Database_License