Final answer:
The FBI's Uniform Crime Reports (UCR) is the criminal justice database that contains seven property files with records of various types of stolen property, including articles and vehicles.
Step-by-step explanation:
The criminal justice database that contains seven property files with records of stolen articles, boats, guns, license plates, parts, securities, and vehicles is known as the Uniform Crime Reports (UCR). This database is compiled by the Federal Bureau of Investigation (FBI) and gathers data from approximately 17,000 law enforcement agencies. However, it's important to note that the UCR may not account for all crimes, as some go unreported, and differences in data collection methods can affect data quality. For more detailed information on crimes, including time of day and location, the National Incident-Based Reporting System (NIBRS) has been introduced.