Differences between a data warehouse and data mart
Write a brief note on the differences between a data warehouse and data mart?
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A data warehouse is for the enterprise and contains numerous subjects. A data mart is for a specific functional region and focuses on one subject. A data warehouse is data-oriented and flexible and contains detailed historical data. A data mart is project-oriented and restrictive and contains some historical data.
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Illustrates the term Merge Sort?
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Describe briefly the term a subquery?
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