QUALITY_CHK_CLASS

QUALITY

check ((quality.classid is null) or ((select class.cropid from class where quality.classid = class.classid) = quality.cropid))

QUALITY_CHK_SORT

QUALITY

check ((quality.sortid is null) or ((select cropsort.cropid from cropsort where quality.sortid = cropsort.sortid) = quality.cropid))