Marking your work with a license is useful if you want to give the user of the work more rights, or just remind the user of your rights. If you actively use social media for disseminating your research, this could be a wise thing to consider when putting your work online.
When reusing someone else's data, it's important to know which licensing conditions are in place to use the data. Investigate what you are allowed with the data, how the author wants to be cited and how you should refer to the data.
See also the libguide on copyright (in Danish).
Creative Commons (CC) provides 6 licenses, each of which grants different rights to use the materials licensed under them. All of these licenses offer more permissions than “all rights reserved”.
The Creative Commons (CC) licenses allow four restrictions on using licensed material:
These restrictions can be combined into six standard licenses: BY(-NC), BY-SA(-NC), and BY-ND(-NC). Creative Commons has also developed the special CC0 (“no rights reserved”) license, where the copyright owner / licensee completely can renounce all its rights.
See box on the left for a graphic representation of the different licenses.
Read more on: https://creativecommons.org