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2.2 Optimize the following two relational algebra queries (Your marks will depend on how well you present the key ideas of query optimization in
2.2 Optimize the following two relational algebra queries (Your marks will depend on how well you present the key ideas of query optimization in your answer). In addition to this, draw the query trees correspond to queries before and after your optimisation. (a) TCUSTOMER.name, EMPLOYEE.name,date (0(CID=CustomerI D) A(EID=Employeel D) A(price>150) (BOOKING EMPLOYEE x CUSTOMER)) (2 Mark) () 1.CID, BHC2.CID,B1.Date (0 (1.CID
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a Consider the relational algebra query T...
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Fundamentals of Database Systems
Authors: Ramez Elmasri, Shamkant Navathe
6th edition
136086209, 978-0136086208
