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Chapter 11. Business Intelligence: The N... > Core Technologies: Data Warehousing

Core Technologies: Data Warehousing

Today, a majority of Fortune 2,000 enterprises have constructed or are constructing data warehouses to serve as networked data hubs for optimizing their business operations. Data warehouses are repositories of summarized historical data, often extracted from disparate departmental or enterprise databases. The idea behind data warehousing is to gather all company data together in one place to give greater business process visibility, learn more, and improve organizational performance.

Warehouse data supports management's decision-making process. This process is subject-oriented, integrated, time-variant, and nonvolatile.[11] Simply put, this means that the data warehouse is focused on a business concept, such as sales, rather than on a business process, such as issuing invoices, and contains all the relevant sales information gathered from multiple processing systems. This information is collected and represented at consistent periods of time and is not changing rapidly.


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