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Figuer: -What Programmer's or User's Decision Typically Will Affect the Performance

Question 58

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Figuer: Figuer:   -What programmer's or user's decision typically will affect the performance of the query? A)  Placing the condition  PICKUP = 'ERIE' OR PICKUP = 'CARY'  before the condition  CUSTOMER.CID = RENTALS.CID  in the query. B)  Placing the condition  PICKUP = 'ERIE' OR PICKUP = 'CARY'  after the condition  CUSTOMER.CID = RENTALS.CID  and before the condition  RENTALS.MAKE = RENTCOST.MAKE  in the query. C)  Selecting the attributes CID in CUSTOMERS and CID in RENTALS as indexes on the tables. D)  None of the above
-What programmer's or user's decision typically will affect the performance of the query?


A) Placing the condition "PICKUP = 'ERIE' OR PICKUP = 'CARY'" before the condition "CUSTOMER.CID = RENTALS.CID" in the query.
B) Placing the condition "PICKUP = 'ERIE' OR PICKUP = 'CARY'" after the condition "CUSTOMER.CID = RENTALS.CID" and before the condition "RENTALS.MAKE = RENTCOST.MAKE" in the query.
C) Selecting the attributes CID in CUSTOMERS and CID in RENTALS as indexes on the tables.
D) None of the above

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