NIEM NDR 2008-12-19 Data The Naming and Design Rules (NDR) establish rules for the naming and design of XML data elements and schemas to be incorporated into the National Information Exchange Model (NIEM) in order to foster interoperability and sharing of data efficiently across organizations and systems. The use of rules to ensure consistency in the naming and design of XML data elements and schemas will facilitate the sharing of data across organizations and systems, thereby reducing the cost to the taxpayers and increasing the effectiveness of agencies in sharing information to accomplish their objectives in support of their missions. Data Management Service Interface and Integration Interoperability Data Format / Classification eXtensible Markup Language (XML) Service Interface and Integration Interoperability Data Format / Classification NIEM NDR