The ddialliance.org website will be unavailable from 11pm (U.S. Eastern Time) on Saturday August 24th until 7am on August 25th due to server maintenance.

DDI Resources

DDI Profiles

A DDI Profile describes a subset of valid DDI elements used by an agency. Read on for best practices, recommended element sets and more.

DDI Adopters

View a list of organizations and projects that have adopted the DDI standard.

Markup Examples

View a variety of DDI examples for both Codebook and Lifecycle versions. 

Tools

Browse a full list of tools available to help you work with DDI, from authoring and editing to data transformations and conversions.

Glossary

FAQ