If the data changes or if what you want to know changes-or if you want to combine the data with information from another stream or warehouse-you have to change the whole structure of the warehouse.

However, what happens if a delivery worker completes his work on the other side of the city from the warehouse and the driver wishes to synchronize with a different warehouse?

It is the important characteristic of SAS data warehouse technology that the operation of integrated type formed a coherent whole from the data source to the data warehouse.