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A selection of the form giving all the records not satisfying simple individual conditions is ______(a) Conjunctive selection(b) Disjunctive selection(c) Negation(d) None of the mentionedThis question was posed to me in a job interview.My query is from Query Processing in chapter Query Processing and Optimization of RDBMS |
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Answer» RIGHT choice is (C) Negation Explanation: A selection of the FORM giving all the records not satisfying simple INDIVIDUAL CONDITIONS is negation. This is a form of complex selection predicate. |
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