While the Regulation lays down general rules to protect natural persons with regard to the processing of personal data and to ensure the free movement of personal data within the Union, the Directive lays down the specific rules to protect natural persons with regard to the processing of personal data and to ensure the free movement of personal data within the Union in the fields of judicial cooperation in criminal matters and police cooperation.
Cé go ndéantar rialacha ginearálta a leagan síos sa Rialachán chun daoine nádúrtha a chosaint i ndáil le próiseáil sonraí pearsanta agus chun saorghluaiseacht sonraí pearsanta laistigh den Aontas a áirithiú, leagtar síos rialacha sonracha sa Treoir chun daoine nádúrtha a chosaint i ndáil le próiseáil sonraí pearsanta agus chun saorghluaiseacht sonraí pearsanta laistigh den Aontas a áirithiú i réimse an chomhair bhreithiúnaigh in ábhair choiriúla agus an chomhair póilíneachta.