Langage 4DCommandesEnsemblesVersion: 20 R7EnsemblesADD TO SET ( {laTable ;} ensemble )CLEAR SET ( ensemble )COPY SET ( srcEns ; dstEns )CREATE EMPTY SET ( {laTable ;} ensemble )CREATE SET ( {laTable ;} ensemble )CREATE SET FROM ARRAY ( laTable ; tabEnrg {; nomEnsemble} )DIFFERENCE ( ensemble1 ; ensemble2 ; résultat )INTERSECTION ( ensemble1 ; ensemble2 ; résultat )Is in set ( ensemble ) : BooleanLOAD SET ( {laTable ;} ensemble ; nomFichier )Records in set ( ensemble ) : IntegerREMOVE FROM SET ( {laTable ;} ensemble )SAVE SET ( ensemble ; nomFichier )UNION ( ensemble1 ; ensemble2 ; résultat )USE SET ( ensemble )