This document discusses the importance of providing a free license for open data to truly be considered open. For open data to succeed, it must allow for copying, redistribution, and commercial use without limitation. If a free license that permits these things is not provided, the data should not be called open data. The license also needs to be clear, permissive, and non-revokable to avoid potentially making the data fail as open.

1. Open data – how to make it succeed,
how to make it fail

2. Carsten Agger
Software Engineer, Magenta Aps
Board Member, Open Space Aarhus
magenta.dk – osaa.dk

5. There must be a free license!

6. There must be a free license!

7. Copying and redistribution must be allowed

8. Must not limit redistribution
or commercial use

11. Dude, where's my license?

15. If you can't provide a free license,
don't call it open data

17. Don't do it grudgingly

19. Clear, permissive, non-revokable