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- W3023494311 abstract "Publisher SummaryThis chapter discusses the different aspects of relational databases. Relational databases derive their power from the simplicity of their underlying concepts. Intuitively, a relation may be thought of as a rectangular table, and a relational database management system as the system required maintaining the storage, manipulation, update, and retrieval of data from these tables. The data may be stored at many sites, thus leading to the idea of a distributed relational database. A fundamental idea in all database work is that of data independence, where the system shields the user from the physical details of the storage of the data. A refinement of this concept allows the user to concentrate on only that part of the database with which he is concerned, rather than on the entire database. An important concept in database theory is that of the key. A key is a means of identifying uniquely a tuple of a relation. It is usually given as a subset of attributes of the relation scheme." @default.
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- W3023494311 title "Relational databases" @default.
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