A group of undertakings should cover a controlling undertaking and its controlled undertakings, whereby the controlling undertaking should be the undertaking which can exert a dominant influence over the other undertakings by virtue, for example, of ownership, financial participation or the rules which govern it or the power to have personal data protection rules implemented.
Ba cheart gnóthas rialaitheach agus a ghnóthais atá faoi rialú a chumhdach faoi ghrúpa gnóthas, agus ba cheart, dá réir sin, don ghnóthas rialaitheach a bheith in ann tionchar ceannasach a imirt ar na gnóthais eile de bhua úinéireachta, mar shampla, nó de bhua rannpháirtíocht airgeadais nó na rialacha lena rialaítear an rannpháirtíocht sin nó de bhua na cumhachta chun rialacha maidir le cosaint sonraí pearsanta a chur chun feidhme.