Comprehensive Extensible Data Documentation and Access Repository (CED²AR)

CED²AR is designed to improve the documentation and discoverability of both public and restricted data from the federal statistical system. CED²AR is based upon leading metadata standards (Data Documentation Initiative, DDI). The web application CED²AR was  developed to be able to expose and edit  new features added by the Cornell node. The main CED²AR instance both hosts those unique codebooks, as well as allows us to showcase the new features in our DDI extensions. The production server can be found at A demonstration server is available at Further details, including links to the downloadable source code and a desktop version of the software can be found on the main CED²AR project page. Contact the Cornell team if you are interested in deploying CED²AR.