DDI Lifecycle 3.0

Published: 2008-04-28

 
XML Schema (entry point): https://ddialliance.org/Specification/DDI-Lifecycle/3.0/XMLSchema/instance.xsd

Content

Description

DDI Lifecycle 3.0, published in April 28, 2008, represented a major advancement for DDI by fully incorporating XML Schemas and moving to a data life cycle approach. Element content for DDI 3.0 was developed by several Working Groups with the technical specification itself created by the Technical Implementation Committee (TIC).

Applications

The intent of DDI Lifecycle was to support the management, preservation, and dissemination of complex social science data files. The ability to manage and reuse content improves the ability to capture metadata at its point of origin and then track its use and change over time. 
 
Version specific changes
First published version of the DDI Lifecycle. Previous structure is DDI Codebook v.2.1
 
Support for the DDI Lifecycle from planning through analysis. Organized around major areas of activity: Conceptual Content, Study Unit, Data Collection, Logical Records, Physical Records, Physical Instances (data store), Archiving, Groups, Resources, and Comparison. Introduces the idea of metadata reuse within and between studies, support for repetative surveys, creation and management of questionnaires, and management of metadata over time. Content may be used to populate question, variable, and concept repositories.

Informational Documentations

Markup Examples:

No markup examples of 3.0 have been made available as it has been determined that this particular version could not be implemented. See the most current version of DDI-Lifecycle.

License

DDI Lifecycle 3.0 XML Schema is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. 
DDI Lifecycle 3.0 XML Schema is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. 
Other DDI documents are distributed under Creative Commons licenses
The development of DDI Lifecycle 3. draws on earlier DDI versions and work of the committees and individuals who developed them as well as the collective ideas, needs, and work of the Expert Committee of the DDI Alliance. Major contributions to DDI 3.0 were made by many individuals and organizations.

Development Work

The Bylaws of the Alliance mandate an open Public Review period during which the community may comment on a major release like Version 3.0. This review period occurred in Spring 2007, with Version 3.0 then issued as a Candidate Release, following approval by the DDI Alliance in May 2007 at its annual meeting.
On April 8, 2008, the Version 3.0 Candidate Release was made available in final form. After a short review period the DDI Alliance voted to publish the specification officially. The final published package was made available on April 28, 2008. 
 
The DDI Alliance Bylaws require a demonstration of Proof of Concept before official publication of any change to the DDI specification. We provide this information in the form of a Proof of Concept table distinguishing between use cases and implementations
 
Version specific changes
First published version of the DDI Lifecycle. Previous structure is DDI Codebook v.2.1

Future Work 

Development of DDI Lifecycle is managed by the DDI Alliance Technical Committee (TC). The work of the TC can be found at Technical Committee - DDI - Confluence (atlassian.net). Issues related to the development of DDI Lifecycle are managed at DDI: Lifecycle - Issues - JIRA (atlassian.net).

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