- SDMX Mapping Assistant
A tool to facilitate the mapping between the structural metadata provided by an SDMX-ML Data Structure Definition and those that reside in a database of a dissemination environment.
- ICPSR - Inter-university Consortium for Political and Social Research
A data archive providing leadership and training in data access, curation, and methods of analysis for the social science research community; all metadata conforms to the DDI standard.
- The Institution for Social and Policy Studies (ISPS) Data Archive
Provides members of the scholarly community with access to files associated with scholarly studies for the purpose of replication, for all studies conducted by ISPS-affiliated researchers. ISPS metadata records conform to DDI requirements and include a minimal set of Dublin Core metadata elements.
- 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.
- SDMX - Statistical Data and Metadata Exchange
A set of common technical and statistical standards and guidelines to be used for the efficient exchange and sharing of statistical data and metadata.