The Danish Data Archive (DDA) is the national social science data archive. DDA is primaily used by researchers and students wanting access to data materials created by Danish researchers or about Denmark.
DDA is dedicated to the acquisition, preservation and dissemination of (primarily) quantitative data created by researchers from social science, health science and history.
Access to the datasets via order. DDA is a member of CESSDA ERIC - an organisation for European social science data archives - which co-operates on EU-projects, agreements on access to holdings in national data archives etc. DDA is active in the Data Documentation Initiative - an international co-operation to define standards for the documentation of metadata. DDA has a member on the steering committee and is involved in the development of software tools for implementing the DDI standard.