Consider the following DFM schema. country or sales District Tariff-plan state Unit-cost city a number calling called day-of-week Call year month be duration date hour cost How big would the roll-up lattice be for this schema? Draw the roll-up lattice for the dimensions calling and date only. Consider the following DFM schema. country or sales District Tariff-plan state Unit-cost city a number calling called day-of-week Call year month be duration date hour cost How big would the roll-up lattice be for this schema? Draw the roll-up lattice for the dimensions calling and date only