back up files, Database Management System

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Define the basic operations of the relational algebra, Define the basic ope...

Define the basic operations of the relational algebra?     Ans: Basic operators of relational algebra are: 1. Union (∪) - Selects tuples which are in either P or Q or in bot

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In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.

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