- UKDA - UK Data Archive
Curator of the largest collection of digital data in the social sciences and humanities in the United Kingdom, the archive uses DDI as the basis for its catalogue records.
- DDI - Data Documentation Initiative
An international standard for describing data from the social, behavioral, and economic sciences. Expressed in XML, the DDI metadata specification supports the entire research data life cycle.
A British cultural heritage standard for recording information on buildings, archaeological sites, shipwrecks, parks and gardens, battlefields, areas of interest and artefacts.