The following summary is based on the Creative Commons set of licenses, with one addition – for which a universal license text is not yet available. One of the tasks that GEO BON can assist with (and potentially a task for the RDA) is to develop an ethics-based restricted license that supports free and open access given certain precautions.

URL Short Description
Public Domain: CC0

https://creativecommons.org/about/cc0#

Use this universal tool if you are a holder of copyright or database rights, and you wish to waive all your interests in your work worldwide.
Attribution 4.0 International (CC BY 4.0)

http://creativecommons.org/licenses/by/4.0/

Free to share, adapt, and apply the work, even for commercial purposes, provided that you give appropriate credit.
Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0)

http://creativecommons.org/licenses/by-nd/4.0/

Free to share, even for commercial purposes, provided that you give appropriate credit.
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)

http://creativecommons.org/licenses/by-sa/4.0/

Free to share, adapt, and apply the work, even for commercial purposes, provided that you give appropriate credit and distribute the adaptations under the same license.
Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

http://creativecommons.org/licenses/by-nc/4.0/

Free to share, adapt, and apply the work, for non-commercial purposes, provided that you give appropriate credit.
Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)

http://creativecommons.org/licenses/by-nc-sa/4.0/

Free to share, adapt, and apply the work, for non-commercial purposes, provided that you give appropriate credit and distribute the adaptations under the same license.
Attribution-NonCommercial-NoDerivs : CC BY-NC-ND

http://creativecommons.org/licenses/by-nc-nd/4.0/

Free to share, provided that you give appropriate credit, apply the work for non-commercial purposes only, and do not distribute modifications or derivatives. Note that this is not a free culture license.
Restricted: Ethics and Privacy (to be developed). The work is restricted in its use in one of the following ways: the end user must be known to the provider of the data, and/ or can only access the data under controlled conditions. Publication of derivatives to be agreed with the data provider.