strength of relational model

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Raul T


Date added:

November 28, 2010








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Using a database system, the user or programmer or application specialist need not know the details of how the data are stored and such details are usually "transparent" to the user. . These are covered briefly in appendices in the text. The relational model was first proposed by E.F. Codd in 1970 and the first such systems were developed in 1970s...
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Codd in 1970 and the first such systems were developed in 1970s. The relational model is now the dominant model for commercial data processing applications. The relational model can be used in both conceptual and logical database design. The basic structure in the model is a table .Tables consists of rows and columns...
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