As used in this chapter, “criminal justice agencies” are those agencies at all levels of government which perform as their principal functions, activities which either:
(a) Relate to the apprehension, prosecution, adjudication, incarceration, or correction of criminal offenders; or
(b) Relate to the collection, storage, dissemination or usage of criminal offender record information.
(Added by Stats. 1973, Ch. 992.)