Riigi ja kohaliku omavalitsuse andmekogusid peetakse infotehnoloogiliste andmebaasidena. Andmekogu pidamisel tuleb andmed klassifitseerida ja kodeerida vastavalt riiklikele klassifikaatoritele ja standarditele.
The main objectives of the surveillance network system are to make the official classification of holdings, to maintain such classification by regular inspection, to collect epidemiological data and to carry out disease monitoring so as to ensure compliance with all the provisions of this Directive and other directives in respect of health restrictions.