DDI-Lifecycle v4.0 BETA 4 Review
The Technical Committee is happy to announce the availability of the fourth beta version of DDI Lifecycle 4.0. This is intended to be the final beta release prior to a public review and adoption.
DDI Lifecycle 4.0 is managed using a Model First development approach. Content additions and changes are added to the model and the serialization formats are automatically generated. The metadata content of DDI 3.3 has been converted into the new 4.0 model.
Comments on this Beta 4.0 are requested by April 15th 2025.
We continue to look for feedback on the community's preference between the different OWL serializations and general comments about the XML and JSON. Users can provide questions and comments to the TC using GitHub issues with a free GitHub account at:
https://github.com/
The beta 4 package is available at:
https://github.com/
The documentation for DDI Lifecycle 4.0 is also auto-generated in real time from the model, and can be viewed at:
https://docs.ddialliance.org/
The latest DDI Lifecycle development outputs are auto-generated and can be viewed at:
https://docs.ddialliance.org/
What's New and Changed
TypeOfVersionNumber should be a CodeValueType
TypeOfUserID and TypeOfUserVersion should be CodeValueType
Allow vocabulary instance URIs in code value
Use common reference naming convention
typo in instrument documentation
Set variable to concept relation to 0..n
Align Concept relations with SKOS
Allow name and label on GeneralInstruction, GenerationInstruction
ManagedMissingValuesRepresentation at RepresentedVariable level
Update to newest COGS release
include abstract types and use AllOf in json schema
use new DateOnly and TimeOnly in csharp publisher, prefer AssumeUniversal when reading dates
The ddi-lifecycle-4.0-beta.4.zip package includes:
schema.xsd - XML Schema
jsonSchema.json - JSON Schema
dctap.csv - Dublin Core Tabular Application Profile
ddi4.xmi - OMG's UML XMI 2.5
ddi4.owl - RDF OWL (closed with restrictions)
ddi4.owl.ttl - RDF OWL (open)
ddi4.shex - ShEx
ddi4.shacl- SHACL
Other formats are also available but are not included in the official release.
Full Changelog: v4.0-beta.3...v4.0-