The DDI Web Team is currently working on an updated version of this website. Only essential updates are being made at this time.

DDI Alliance

The Data Documentation Initiative (DDI) is an effort to create an international standard in XML for metadata describing social science data. The Alliance is a self-sustaining membership organization whose members have a voice in the development of the DDI specification.

Membership Documents

Join the DDI Alliance

Alliance Structure


DDI Alliance Strategic Plan, 2014-2017