Source systems may not have accurate information at all times. Which factor is responsible primarily for data inaccuracy in the source systems? ОА.
duplicate records
OB. heterogeneous databases
OC. storage space
OD. database personnel
O E.
data mining

In the context of the box model, what is the difference between a margin and a padding? a. a padding lies outside a box border, while a margin lies inside it. b. a padding lies inside a box border, while a margin lies outside it. c. a padding can be adjusted independently, while a margin depends on the size of its box. d. a padding depends on the size of its box, while a margin can be adjusted independently.