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

Archival Codebook DTDs

This page lists archival versions of the Codebook DTD.

Version 1 (published 2000-03-24)

• http://www.icpsr.umich.edu/DDI/Version1.dtd

• DTD: view, download

• Structure

• http://www.icpsr.umich.edu/DDI/Version1.xsd

• XSD*: download

Version 1.01 (draft 2001-01-11)

• http://www.icpsr.umich.edu/DDI/Version1-01.dtd

• DTD: view, download

• Structure

• http://www.icpsr.umich.edu/DDI/Version1-01.xsd

• XSD*: download

Version 1.02 (draft 2001-08-08)

This draft version reflects modifications made to Version 1.01 based on DDI Committee input at its June 29, 2001, meeting in Washington, DC. Changes are highlighted in bold in the file below.

• http://www.icpsr.umich.edu/DDI/Version1-02.dtd

• DTD: view, download (Draft version for viewing)

• http://www.icpsr.umich.edu/DDI/Version1-02.xsd

• XSD*: download

Version 1.02.1 (draft 2002-02-20)

Version 1.02.1 replaces the previous draft Version 1.02 (2001-08-08). Errors were corrected, but no new elements were added. See the history notes at the beginning of the DTD for more information on the revisions. The modifications made to Version 1.01 are indicated in red type in the structure document below.

• http://www.icpsr.umich.edu/DDI/Version1-02-1.dtd

• DTD: view, download (Draft version for viewing)

• Structure

• http://www.icpsr.umich.edu/DDI/Version1-02-1.xsd

• XSD*: download

Version 1.2.2 (stable version, published 08-28-02)

• http://www.icpsr.umich.edu/DDI/Version1-2-2.dtd

• DTD: view, download

• DTD Structure

• http://www.icpsr.umich.edu/DDI/Version1-2-2.xsd

• XSD*: download

Version 1.3 (development version)

• http://www.icpsr.umich.edu/DDI/Version1-3.dtd

• DTD: view, download

• DTD Structure

• http://www.icpsr.umich.edu/DDI/Version1-3.xsd

• XSD*: download

* Please note that schema are unofficial versions of the DTD; they are provided by the gracious assistance of developers at Harvard, but are not committee-approved.

Aggregate/Tabular Data Extension

A model for describing aggregate/tabular data has been incorporated into Version 1.3 and is now being reviewed and tested by the DDI Committee and other interested parties. For more information on the aggregate data model, please see below.

• Structure of the aggregate model

• Notes on the aggregate model

• Example: World Population Table Codebook

• Example: Fishermen and Registered Vessels Codebook

Version 2.0 (Published 2003-07-15)

DTD

• http://www.icpsr.umich.edu/DDI/Version2-0.dtd

• DTD: view, download

• DTD Structure

CALS Exchange Table (modified version)

• http://www.icpsr.umich.edu/DDI/Tables.dtd

• DTD: view, download

Schema

• http://www.icpsr.umich.edu/DDI/Version2-0.xsd

• XSD: download