A similar database that is used to compare DNA for possible matches is known as the Combined DNA Index System or (CODIS). Entries are put into CODIS from and known offenders.

A similar database used for comparing DNA for potential matches is called the Combined DNA Index System, or CODIS. Entries are added to CODIS from crime scenes and known offenders. This system allows law enforcement agencies to cross-reference DNA evidence from a crime scene with a database of DNA profiles of convicted and arrested individuals. The process is as follows:

1. Collection: DNA is collected from a crime scene or from a known offender. This can be in the form of blood, hair, skin cells, or other biological material.

2. Analysis: The collected DNA is then analyzed in a laboratory to create a DNA profile. This profile is a unique set of numbers that identifies a person's DNA.

3. Entry into CODIS: The DNA profile is then entered into the CODIS database. This database is maintained by the FBI and is used by law enforcement agencies across the country.

4. Comparison: When new DNA evidence is collected, it is also analyzed and entered into CODIS. The system then compares the new DNA profile to all the profiles already in the database.

5. Match: If there is a match between the new DNA profile and a profile already in the database, the system alerts the relevant law enforcement agency. This can help investigators link a suspect to a crime scene or link multiple crimes to a single offender.