Data Warehouse: An Overview

Data ware housing is a booming industry with many interesting research problem. The data warehouse is concentrated on only few aspects. Here we are discussing about the overview of data warehouse. Let's look at various approaches to the data ware house design and usage process and the steps involved, architecture, need, advantages. Data-driven decision support systems, such as data warehouses can serve the requirement of extraction of information from more than one subject area. Data warehouses can provide the information required by the decision makers.