Normalize the relations into 3NF Order Fom Order number: 1234 Date: 11/04/98 Customer number: 9876 Customer name: Billy Customer address: 456 HighTower Street City-Country: Hong Kong, China ProductNo Desscription Quantity Unit Price A123 Pencil 100 $3.00 B234 Eraser 200 $1.50 C345 Sharpener $8.00

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Fundamentals of Datawarehouse

A data warehouse is a data repository which is used to store large quantities of historical data that are mostly used for creating reports that help businesses to identify their weaknesses and strengths. For example, demographics data about people of a region can help businesses identify the needs and preferences of the region’s population. A data warehouse acts as a central storage for storing data that comes from one or more heterogenous sources. It also consists of data which can be old and of historical value. One of the most important applications of this type of system is that it is used for supporting business intelligence and data analytics applications.