-The Combined DNA Index System (CODIS) is an FBI-run database that blends forensic science and computer technology into a tool for solving violent crimes.
-CODIS enables Federal, State, and local crime labs to exchange and compare DNA profiles electronically, thereby linking crimes to each other and to convicted offenders.
-CODIS uses two indexes: the Convicted Offender Index, which contains profiles of convicted offenders, and the Forensic Index: which contains profiles from crime-scene evidence.
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