Databases have become an integral part of our modern-day life. We are in an information-driven society today. Database technology has a direct impact on all aspects our daily lives. Decisions are routinely made by organizations based on the information collected and stored in databases. A record company may decide to market certain albums in selected regions based on the music preference of teenagers. Grocery stores display more popular items at the eye level and reorders are based on the inventories taken at regular intervals. Other examples include patients’ medical records in hospitals, customers’ account information in banks, book orders by the libraries or bookstores, club memberships, auto part orders, winter cloth stock by department stores, and many others.
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