The deposited dataset has CC0 licence assigned by default. If you need to choose another licence for your dataset, select “Edit dataset” and then “Licences or conditions” (or go to the “Licences and conditions” tab and select “Edit condition requirements”). Then select the relevant licence in the drop-down menu and save changes.

Creative Commons licenses for research data

	CC0 – No Rights Reserved	Allows the transfer of the dataset into the public domain, allowing users to use the dataset without restrictions and without any obligations
	CC BY – Attribution	Allows users to copy, modify, distribute and create new works or collections based on the licensed dataset, provided that the authorship of the dataset is indicated, allows the use of the dataset for commercial purposes
	CC BY NC – Attribution-NonCommercial	Allows users to copy, modify and distribute the licensed dataset for non-commercial purposes only, provided that the authorship of the dataset is indicated
	CC BY SA – Attribution-ShareAlike	Allows users to copy, modify and distribute the dataset provided that they credit the author and share the original and modified data under the same licence
	CC BY NC SA – Attribution-NonCommercial-ShareAlike	Allows users to copy, modify and distribute the dataset, provided that both the original and modified data are made available under the same licence and for non-commercial purposes only
	CC BY ND – Attribution-NoDerivatives	Allows users to re-use the dataset, provided that authorship is indicated. However, the licence does not allow modification of the dataset. It is not advisable for licensing research data, as it makes it virtually impossible to continue working on the data
	CC BY-NC-ND – Attribution-NonCommercial-NoDerivatives	Allows users to download and share the dataset, provided that authorship is indicated. The collection cannot be modified or commercially used. This is the most restrictive of the licences. It is not advisable for licensing research data, as it makes it virtually impossible to continue working on the data

Database licences

PDDL (Public Domain Dedication and License PDDL)	The public domain for databases, implies the unrestricted possibility to download, share and modify the database
ODC (Open Data Commons Attribution License ODC-BY)	Allows copying, modification of the database provided that the authorship of the database is indicated
ODbL (Database License ODC – ODbL)	Allows copying, modification and distribution of the database provided that the authorship of the database is indicated and that the modified database is distributed under the same conditions as the original database was made available

Software licences

GNU GPL – General Public License	Allows the programme to be run, analysed, distributed and improved for any purpose. Derivative works must be made available under this licence, including modified source code
GNU LGPL – Lesser General Public License	Allows the programme to be run, analysed, distributed and improved for any purpose. It imposes restrictions known as copyleft only on individual source files. The licence commits only the source code (source files) in its original version to be made available without derivative works.