Define non-additive facts.The facts that can not be summed up for the dimensions present in the fact table are called non-additive facts. The facts can be useful if there are changes in dimensions. For example, profit margin is a non-additive fact for it has no meaning to add them up for the account level or the day level.
Define non-additive facts.Non additive facts are facts that cannot be summed up for any dimensions present in fact table. This means that these columns cannot be added for producing any results.