In an appeal from a juvenile court order denying a request by minor defendant to expunge his DNA samples from the state's database following the juvenile court's grant of his simultaneous request to redesignate his admitted felony offense as a misdemeanor, under Penal Code section 1170.18, a measure enacted following passage of Proposition 47, the Safe Neighborhoods and Schools Act, which reduced the classification of certain crimes from felony to misdemeanor, the juvenile court's order is affirmed where a trial court is not authorized to order expungement of a defendant's DNA sample when granting relief under section 1170.18 to redesignate a felony offense as a misdemeanor.