ocr: Time key Time Dimension R10 Customer Dimension Customer key Product key 0E0 Product Dimensions Join Promotion Dimension Promotion Kes soin Salespersonkey Salesperson: cins Dimension Status mension Dauser Quantity: sold THIS Extendedlist price MINUS Total allowances MINUS Total discounts EQUALS Extended net: price l REVENUE SHOULD WE STORE) T YES! Figure 3. A typical customer billing fact table in which the extended net price can be derived from the other quantities, but nevertheless we want to store it in the table.
