DP-R|EX is a domain-specific data portal that provides access to research data in accordance with the FAIR principles to ensure open access for users as possible. Therefore, we (1) make existing and previously unpublished data accessible and (2) serve as a contact point for the FAIR publication of relevant data from the current funding programmes of the Federal Ministry of Education and Research (BMBF).

The project network consists of partner institutions, namely GESIS, DeZIM.fdz and Qualiservice, who are working together on the long-term archiving and dissemination of research data. The partners possess domain- and method-specific expertise to determine the most appropriate way to share the data and organise data access. The objective is to attain an ideal match between data and repository as well as to provide access to subsequent users in accordance with the sensitivity of the data. Additionally, domain-specific description standards (metadata) are used to index the research data, making it searchable, and visible through a data catalogue.

DP-R|EX is open to all research data that is suitable for answering questions on the explanation, prevention, and avoidance of racism or right-wing extremism in all its forms. This includes data that deals with attitudes, beliefs, or behaviours that are based on the systematic inequality, devaluation, and exclusion of groups of people. We also welcome data that, according to their context of origin, are conducted to investigate restrictions or attacks on the liberal democratic basic order and its intuitions or representatives.

Both qualitative and quantitative as well as mixed-methods research data are accepted for archiving and publication. To ensure scientific reusability with appropriate protective measures, the data must be prepared and documented accordingly. The data should be openly available for subsequent use while maintaining necessary security measures (The Royal Society, 2012). It is advisable for data providers to contact us if they have any questions or uncertainties regarding data preparation and sharing prior to reporting. The following are basic aspects that are mandatory for storing data in the participating RDCs and for verification in the DP-R|EX data catalogue:

• The data collection and the study context should be documented in a clear and concise manner, following the archiving guidelines of the project partner. This can be achieved through a study or method report.
• Data protection and research ethics requirements must have been fulfilled during data collection, including obtaining informed consent from study participants for the collection and archiving of data.
• Research data should be available in common file formats and be able to be used and analysed with common software.