From Database to Data WareHouse

Now the data processing in a company is always be transaction processing . But the data that a manager needs is not that kind of detail data. Managers need all_sided, integrated and compositive data. So Data WareHouse is coming. Through ascending to the developing process of the database technology, this paper tell the idea of what Data WareHouse is, how Data WareHousecame intobeing and the difference between Database and Data WareHouse.