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. 


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