CED²AR Technical Information

Print Friendly, PDF & Email

Proposed DDI-C enhancements

Proposed DDI 2.5.1-NCRN enhancement: Fine-grained access rights

  • This enhancements allows to assign access rights at a more granular level than in standard DDI 2.5.1. The schema is available here: xsd.
  • Users can link directly to the schema by adding the following attribute to the <codeBook> definition in their DDI XML:
    xsi:schemaLocation="ddi:codebook:2_5 http://www.ncrn.cornell.edu/docs/ddi/2.5.NCRN/schemas/codebook.xsd"

Proposed DDI 2.5.1-NCRN enhancement: DDI+PROV

  • Proposed DDI 2.5.1-NCRN enhancement with PROV integration: allows to embed PROV and link to PROV bundles in DDI, enhancing provenance tracking in metadata.
  • Users can link directly to the schema by adding the following attribute to the <codeBook> definition in their DDI XML:
     xsi:schemaLocation="ddi:codebook:2_5 http://www.ncrn.cornell.edu/docs/ddi/2.5.NCRN.P/schemas/codebook.xsd"

Additional resources

DDI-related Software

CED²AR v2

CED²AR v3

The next generation of the software, more modular in structure, is currently being developed.

System requirements:

  • Tomcat 7 or higher.
    Although Tomcat is primarily a Servelt/JSP container, it can server http requests from clients perfectly well.   An SSL certificate can be installed on Tomcat so that the content served is encrypted. However, most web applications front Tomcat with Apache Httpd (Apache Web Server) for added protection.

Additional resources