Added automatic builds
Each day a ZIP-file is created via cron.
The builds consist of XMI, XSD, DocBook, PDF and graphs in dot, svg and png.
Added basic validation for names
installed module for validation, some rules for object and package names have been defined.
Added help for creating and managing the model
Guidelines for naming and propeties.
Added stage-tagging for objects
Re-arranged "Status" and added field for Stage, filter added on objects page.
Changes for Datatype
Datatype taxonomy is replaced by a datatype content type, to create a new one go to /node/add/datatype. You can specify basic documentation of the datatype and specify enumerated values. A datatype must be placed in a package.

Welcome to the development platform for the next generation of DDI

The DDI Alliance is building a new model-based specification, for more information on the background to this see, the process and what we hope to achieve see the DDI Alliance website at

A site to hold discussions and further ongoing discussion is at


Defines relations among PhysicalSegments (e.g. hierarchy, sequence, equivalence). Multiple PhysicalSegments might encode a LogicalSegment. THis allows for the specification of how those multiple parts fit together.


A Collection of physical resources (DataStores). Logical resources may be represented in multiple physical instances in multiple, formats and media.


The set of pairs defining the relations between the physical resources in a PhysicalDataCollection


The description of a segment using a descriptive term from a controlled vocabulary.


Points to a SPARQL query and related information


Contains a SPARQL query and the necessary related information for retrieving a segment from a triple store.


Points to one or more specifications of an SQL query and related information


Contains an SQL statement and related information allowing the description of a segment of a relational database.


Points to a set of DDI identifiers that together identify a segment of DDI.


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