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Hi, I am trying to better understand working involved in this question. I would appreciate if you provide working with your answer. Thanking you. 2.2
Hi,
I am trying to better understand working involved in this question. I would appreciate if you provide working with your answer. Thanking you.
2.2 Optiize 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 BOOKING TCUSTOMER na me EMPLOYEE. na me date EMPLOYEE CUSTOMER)) (CID-CustomerID)A(EID-Employee IDA(price > 150) (2 Mark) (PBHC1((BOOKINGHOTEL) CID-CustomID HOTEL) CID-CustomerID CUSTOMER))) CUSTOMER) x PBHC2( (BOOKING (2 Mark) 2.2 Optiize 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 BOOKING TCUSTOMER na me EMPLOYEE. na me date EMPLOYEE CUSTOMER)) (CID-CustomerID)A(EID-Employee IDA(price > 150) (2 Mark) (PBHC1((BOOKINGHOTEL) CID-CustomID HOTEL) CID-CustomerID CUSTOMER))) CUSTOMER) x PBHC2( (BOOKING (2 Mark)
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