Terms containing one-to-one relation

Subject	English	French
law	duty to have sexual relations with one's spouse	devoir conjugal
IT, dat.proc.	many-to-one relation	relation plusieurs-à-un
IT, dat.proc.	one-to-one relation	relation un-à-un
gen.	ordering their relations with ... according to one of the following formulae at their choice	régler leurs relations avec ... selon l'une des formules suivantes au choix