A widely used, international standard for describing data from the social, behavioral, and economic sciences. Two versions of the standard are currently maintained in parallel:
Both versions are XML-based and defined using XML Schemas. They were developed and are maintained by the DDI Alliance.
A set of common technical and statistical standards and guidelines to be used for the efficient exchange and sharing of statistical data and metadata.
Sponsoring institutions include BIS, ECB, EUROSTAT, IMF, OECD, UN, and the World Bank. Technical Specification 2.1 was amended in May 2012.
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.
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.
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.
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.