Membership Documents
  • Bylaws
  • Charter
  • Join the DDI Alliance
  • Membership Form (PDF)
Alliance Structure
  • Member Institutions
  • Expert Committee
  • Steering Committee
  • Committee Meeting Minutes
Publications
  • General Brochure
  • Newsletter
  • Reports
    • Annual Report 2006 (PDF)
    • Annual Report 2005 (PDF)
    • Annual Report 2004 (PDF)
    • Strategic Plan, 2007 and Beyond (PDF)

Papers, Presentations, and Reports
Projects Using the DDI
DDI Users' Listserv
Getting Started with the DDI
Frequently Asked Questions (FAQ)
DDI Logo

Document Type Definition (DTD)
XML Schema (XSD)
DDI Lite (Recommended Elements)
Version Control for DTD
Information on DTD Elements (DDI Tag Library)

Mapping to Other Metadata Standards
  • Dublin Core
  • Recommended Fields (CESSDA) (PDF)
Related Tools
  • Software/Tools
  • XML/XSLT

Welcome...

The Data Documentation Initiative is an international effort to establish a standard for technical documentation describing social science data. A membership-based Alliance is developing the DDI specification, which is written in XML.

The DDI has received external support from the National Science Foundation (NSF award SES0136447) and Health Canada.

If you are interested in joining the effort or need advice on implementing the DDI specification in a project, please contact us.

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Welcome...

What's New with the DDI?

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