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Many things have changed in the world of business and IT since Data Warehouses were first popularized. Many studies have suggested that by far the majority of IT spend is on simply running the business rather than changing the business: just keeping the lights on rather than delivering competitive advantage. Within die context of Business Intelligence and Data Warehousing, this is often seen in IT groups spending too much time in ad-hoc integration and data re-engineering, and Business Analysts spending their time collecting and preparing data rather than analyzing it and taking action based on results. To really change die business, Data Warehouses must deliver 'Insight' into the heart of the business process through web services, and the analysis process through Business Intelligence tools.
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