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State true or false: Multiple equivalence rules can be used one after the other on a query(a) True(b) FalseI have been asked this question during an interview.Asked question is from Transformation of Relational Expressions topic in portion Query Processing and Optimization of RDBMS

Answer»

The CORRECT answer is (a) True

For EXPLANATION I would say: Multiple EQUIVALENCE rules can be used one after the other on a QUERY or on parts of the query. This can be used to simplify the query greatly thus reducing its time COMPLEXITY.



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