DDI-Codebook 2.5

Previous Versions: 2.1     

Published: 2012-01-17

Supplemental Change: 2014-01-29

XML Schema files (namespace) http://www.ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/

Content

Description
Applications
Informational Documents
Markup Examples
License
Development Work
Future Work

Description

DDI-Codebook is a more light-weight version of the standard, intended primarily to document simple survey data. Originally DTD-based, DDI-C is also available as an XML Schema.

Applications

Documentation of a simple study. Basic descriptive content for variables, files, source material, and study level information. Supports discovery, preservation, and the informed use of data. 

Informational Documents

Markup Examples

A listing of available examples of DDI Codebook Version 2.5 instances

License

DDI Codebook 2.5 XML Schema is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
DDI Codebook 2.5 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 General Public License http://www.gnu.org/licenses for more details.
Other DDI documents are distributed under Creative Commons licenses. 

Development Work

DDI Codebook Version 2.5 was published on January 17, 2012, after approval by the DDI Expert Committee on November 18, 2011. This version is an XML Schema. It incorporates new substantive elements requested by the community to better support use in statistical agencies and is designed to make it easier to migrate documents to DDI Lifecycle for those interested in doing so. 
DDI Codebook Version 2.5 was modified on January 29, 2014. This is a sub-minor version change (version 2.5.1) which DOES NOT change the namespace of DDI-C. Modifications corrected an omission of DataFingerprint from 2.5, relaxed cardinality to support multiple languages, and expanded the documentation.
DDI Codebook 2.5 is backward compatible with DDI 2.1. A change log in the download package identifies all changes. A supplemental change log identifies changes found in the sub-minor version 2.5.1.
The development of DDI Codebook 2.5 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 Codebook 2.5 were made by many individuals and organizations

Future Work 

The Technical Committee is working with a group of Codebook users to better align Codebook with various access systems including DataVerse. A summary of development activity with links to issue trackers and discussions is found at DDI Codebook Development Work 

 

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