A rule is named floor if all of its atoms (head and system) are ground. A floor rule R1 is really a ground instance of A different rule R2 if R1 is the results of a substitution of constants for the many variables in R2. The Herbrand base of a https://integrated-management-sys16592.timeblog.net/70264901/datalog-5-things-to-know-before-you-buy