What operation is a selection operation?
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Selects all tuples (records) that satisfy the selection condition from a relation R (or an expression). It filters records according to the condition. It deals with the tuples (records) of a relation. In SQL, the selection operation is specified in WHERE clause of the query.
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Answer:Selects all tuples (records) that satisfy the selection condition from a relation R (or an expression). It filters records according to the condition. It deals with the tuples (records) of a relation. In SQL, the selection operation is specified in WHERE clause of the query.
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