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Products
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Choosing a DDI Product
DDI-Codebook (DDI-C)
DDI-Lifecycle (DDI-L)
DDI-Cross-Domain Integration (DDI-CDI)
Extended Knowledge Organization System (XKOS)
Structured Data Transformation Language (SDTL)
Use Cases
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Use Case by Role
Codebook
Question Bank
Questionnaires
Data Catalog
Longitudinal Data
Computer Aided Interviewing System Output
Data in Excel
Compare Variables
Resources
Show submenu for {{ link.label }}
Training Materials
Controlled Vocabularies
Glossary
Markup Examples
Tools
Relationships to Other Standards
DDI Agency Registry
DDI Metadata Profiles
Events & Publications
Show submenu for {{ link.label }}
Annual Meetings of the DDI Alliance
Conferences
Workshops & Webinars
Events at Dagstuhl
Publications & Presentations
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Working Paper Series
News
Membership
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How to Join the DDI Alliance
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Working Groups & Committees
About
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Our Mission
Leadership
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