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DDI - Cross Domain Integration (DDI-CDI) is a specification aimed at helping implementers integrate data across domain and institutional boundaries. Modern research increasingly involves large amounts of data, much of which comes from non-traditional sources (sensors, big data, social media, etc.) and often from other domains. DDI-CDI focuses on a uniform approach to describing a range of needed data formats (traditional wide/rectangular data, long [event] data, multi-dimensional data, and NoSQL/key-value data) which allows them to be connected and understood to support transformation and processing for integrated use.
All materials for the initial round of public review for the DDI Cross Domain Integration (DDI – CDI) specification can be found in this download.
CLICK HERE to download all content for review.
Access all individual content documents from an index page.
It is recommended that access to the field level documentation for the Model and XML Syntax be through the link from the index page.
Overview (this document)
Credits and Licensing document
Open Issues and Future Steps document
Specification Documents folder:
This folder contains four documents, describing the DDI – Cross Domain Integration specification at a high level. These include an introductory document, a document giving a more detailed description of the model (Foundational Metadata, Data Description, and Process), a document outlining the architecture and approaches to modelling and alignment with other standards/technical specifications, and a set of documentation giving more complex examples and use cases.
The following primary documents are also available through the following links:
This folder contains two versions of the model in Canonical XMI (the XML interchange format for UML models), one using unique class association names and one as documented in the specification documents (some UML tools demand this uniqueness, others do not). There is also a copy of the Sparx Enterprise Architect file used by the development team, for those reviewers who use this tool. All diagrams in the detailed model are included in the EA file.
In the Field-Level Documentation sub-folder is the HTML field-level documentation for every construct in the model. To view online version click here.
In the Supporting Documents sub-folder is a file containing all of the diagrams used on the model, which may be more suitable for reading (“zooming in”) and display than those found in-line in other documents.
Syntax Representation folder:
There is only one syntax representation included in the public review package: Extensible Markup Language (XML). This can be found on the XML Syntax Representation sub-folder.
This folder contains the XML Schema definition file for the XML representation of DDI – CDI, as well as the required “xml.xsd” file. Release notes are included.
In the Examples sub-folder are the three XML examples created in support of the examples and use cases document. In the HTML XML Schema Documentation sub-folder is a zipped archive containing the field-level documentation for the XML Schema. To view online version click here.
This folder contains other examples mentioned in the examples and use cases document.
Your feedback to DDI-CDI is appreciated!
CLICK HERE to view a list of issues filed against this specification or to file and issue.