In order for a publication to meet all the features of open access, it must be available for re-use, among other things. For this, licensing under public licenses is used, especially the internationally known Creative Commons (CC) license. Using one of the 6 offered variants of CC licenses, the author can tell how the published work should be handled and thus allow anyone to use the work within clearly defined conditions.
From an OA point of view, the use of a CC-BY (Creative Commons 4.0 - Indicate Origin) license is ideal, both for scientific publications and for database licensing. CC-BY enables the end user to further share, eg share, modify, commercially and non-commercially use scientific information, under the conditions of designation of origin of scientific information. License information must be provided directly in the specific post, eg as information in the header or footer of the relevant PDF file.
In the case of the Gold Open Acess, the possibility of choosing a public license is given either by the general policy of the publisher or is the subject of a paid service (within the publication fee).
In case of the Green Open Acess depends on the contractual conditions that the author signed when publishing. If the author is the copyright holder, he can publish the article in the repository under a public license.
If you do not know which license to choose for your publication, use the application to select the appropriate license.
Recommended licenses for open research data can be found here.