Data Documentation Initiative

The Data Documentation Initiative (DDI) is an international project to create a standard for information describing statistical and social science data. Begun in 1995, 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 information. Version 3.1 of the DDI standard was released in 2009.^[1]

Member Institutions^[2]

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

See also

• Colectica
• Nesstar
• Metadata standards

External links

• DDI Project
  • Homepage
  • Schema
  • DDI Tools

Related software/tools

• Colectica
• CSM's XCONVERT
• IHSN Microdata Management Toolkit
• Nesstar Publisher
• ODODO
• SDA to XML
• SPSSOMS2DDI
• Virtual Data Center

References

1. ^ DDI Specification
2. ^ DDI-Members

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