This webpage provides information on the Federal Bureau of Investigation's (FBI's) National Data Exchange (N-DEx) program. "N-DEx provides criminal justice agencies with an online tool for sharing, searching, linking, and analyzing information across jurisdictional boundaries. A national repository of criminal justice records submitted by agencies from around the nation, N-DEx enables users to 'connect the dots' between data on people, places, and things that may seem unrelated in order to link investigations and investigators. N-DEx is an unclassified national information sharing system that enables criminal justice agencies to search, link, analyze, and share local, state, tribal, and federal records."
Federal Bureau of Investigation: http://www.fbi.gov/