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Management of data involves both defining structures for storage of information and providing mechanisms for the manipulation of information. In addition, the database system must ensure the safety of the information stored, despite system crashes or attempts at unauthorized access. If data are to be shared among several users, the system must avoid possible anomalous results.
Because information is so important in most organizations, computer scientists have developed a large body of concepts and techniques for managing data.
These concepts and techniques form the databases form an essential part of every enterprise today, storing not only types of information that are common to most enterprises, but also information that is specific to the category of the enterprise. Over the course of the last four decades of the twentieth century, use of databases grewin all enterprises.
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