CCHRS provides the Los Angeles criminal justice community with complete, timely, and accurate criminal history information in an understandable format. The CCHRS database contains arrest and case disposition information about subjects who have been processed by the Los Angeles County criminal justice system. Subject information, including names, addresses, identifiers, and physical descriptions are stored in the database. Arrests and arrest charges, cases and case charges, dispositions, sentences, probation/parole, and warrant data is also available. This source data is provided by the following computer systems: AJIS, APS, CWS, JAI, PDS, PIMS, PHI, and TCIS. County data is supplemented with data from State justice agencies, ACHS, and DMV. Only authorized users have access to this information. Data in the database extends as far back as 1977, when data was first entered into the Personal History Index (PHI) system. CCHRS replaced PHI effective 01/01/2000.