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Name and version: Data Documentation Initiative (DDI), version 3.1

Alternative name: [none]

Valid: From October 2009 (version 3.1)

Description: The Data Documentation Initiative is a standard for technical documentation describing social science data. The current version supports description of the full life cycle of a dataset or data collection (see also Generic Statistical Business Process Model).

Intended use: DDI is commonly used as a standard for documenting and describing data for archiving and reuse. It is also suitable for:

  • Documenting on-going research projects
  • Documenting secondary uses of data
  • Creating concept/question/variable libraries
  • Generating multiple delivery formats for data dissemination or discovery

Maintenance organization: DDI Alliance

ISO Standard Number: not applicable



DDI  Specification:

Schema descriptions:

Relationships to other standards:   Concept Map

DDI is expressed as an XML schema

Language: English

Description last updated / validated: 27 July 2011 (Updated links)

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