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Introduction to DDI

Learn about the DDI (Data Documentation Initiative) metadata standard for describing research data, why you should use it, and who uses it.

How to Use DDI

Learn about how to use DDI for researchers, data managers, statistical agencies, and developers.

Training Materials

We provide a growing collection of training materials for DDI and related topics. Content is geared primarily towards introducing folks to DDI.

Request Training

Use an online form to request DDI training or to submit questions about DDI.

Resources

View additional training resources, including information about how DDI relates to other standards, DDI profiles allowing agents or agencies to specify exactly how they use the DDI XML format, DDI markup examples, and DDI tools

Glossary

Glossary containing terms specific to DDI and metadata.