Calculate the cost functions for different options of executing the JOIN operation OP7 discussed in section 19.3.2.
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The operation is OP7 DEPARTMENT x MGRSSNSSN EMPLOYEE As in section 1823 we assume the secondary inde...View the full answer
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Related Book For 
Fundamentals of Database Systems
ISBN: 978-0136086208
6th edition
Authors: Ramez Elmasri, Shamkant Navathe
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