Maintains the largest archive of personnel, manpower, and training data in the Dept of Defense. DMDC's statistical activities include the personnel survey program, an enlistment testing program to support screening of military applicants, and a client support program to provide statistical support to the Office of the Secretary of Defense. Collects Dept of Defense contract information in support of national economic indicators and the Small Business Competitiveness Demonstration Program. DMDC also produces statistics on DOD purchases from educational and nonprofit institutions and from state and local governments.