Relationship to other Standards

In constructing DDI special care was taken to review related standards as well as previous versions of DDI in order to provide clear mapping to the contents of outside standards or to incorporate content where appropriate. Over 25 standards were evaluated. DDI 3 currently has mapped relationships to the following standards:

• DDI Codebook (DDI-C) and earlier versions
• Dublin Core and MARC
• GSIM (Generic Statistical Information Model)
• ISO/IEC 11179
• ISO 19118 - Geography
• SDMX
• METS
• PREMIS