Data Documentation Initiative

DDI Metadata Standard
Data Documentation Initiative Metadata Standard

Status Production Use
Year started 1995 (1995)
First published 1996 (1996)
Latest version DDI 3.2
May 15, 2014 (2014-05-15)
Organization DDI Alliance
Committee Scientific Board and Technical Committee
Related standards XML
Domain Questionnaires Metadata Standard Statistical survey
License LGPL
Abbreviation DDI

The Data Documentation Initiative (also known as DDI or DDI Metadata) is an international standard for describing surveys, questionnaires, statistical data files, and social sciences study-level information. This information is described as metadata by the standard.

Begun in 1995,[1] the effort brings together data professionals from around the world to develop the standard. The DDI specification, written in XML, provides a format for content, exchange, and preservation of questionnaire and data file information. DDI fills a need related to the challenge of storing and distributing social science metadata, creating an international standard for the design of codebooks. The freely available international DDI standard describes data that result from observational methods in the social, behavioral, economic, and health sciences.[2]

Version 2 of the DDI standard has been implemented in the Dataverse data repository and the data archives of the Inter-university Consortium for Political and Social Research. Version 3.2 of the DDI standard was released in 2014.[3]

Member Institutions[4]

Institution Abbr. Country
University of Alberta Canada
University of California UCDATA US
Centro De Investigaciones Sociológicas CIS Spain
Colectica Colectica US
Cornell University CISER US
Danish Data Archive DDA Denmark
Data Archiving and Networked Services DANS Netherlands
Finnish Social Science Data Archive Finland
German Socio-Economic Panel Study SOEP Germany
GESIS – Leibniz Institute for the Social Sciences GESIS Germany
University of Guelph
Institute for Quantitative Social Science at Harvard University IQSS US
Institute for the Study of Labor IZA Germany
Inter-university Consortium for Political and Social Research ICPSR US
Massachusetts Institute of Technology MIT US
University of Minnesota, Minnesota Population Center MPC US
Norwegian Social Science Data Services NSD Norway
Open Data Foundation
Princeton University US
Research Data Centre of the German Federal Employment Agency, Institute for Employment Research IAB Germany
Roper Center for Public Opinion Research US
Stanford University US
Survey Research Operations, University of Michigan US
Swedish National Data Service SND Sweden
Swiss Foundation for Research in Social Sciences FORS Swiss
University of Toronto Scholars Portal Canada
University of Washington, Center for Studies in Demography & Ecology CSDE US
U.S. Bureau of Labor Statistics (Associate Member) US
Australian Bureau of Statistics ABS Australia
World Bank, Development Data Group DECDG US

See also


  1. DDI History
  2. About DDI
  3. DDI Specification
  4. DDI-Members

External links

Related software/tools

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