Computer Science, asked by janvisumanraj6735, 2 months ago

Q.No.4. (Marks:10+10 = 20)
a- (5P cName, vName(4s cAge>25(3s V.VID=R.VID ^ C.CID=R.CID(2(1Vehicle x Rented)1 X Customer)2)3)4)5
b- (4P cName,cName(3s vName=’Mehran’ (2(1Location ⋈LocID Rented)1 ⋈CIDVehicle)2)3)4
Perform following tasks for each of the above queries. 1- Construct Query Tree
2- Write alternative relational query using ‘Commutativity of Join and Selection (or Cartesian product)’ rule.

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Answered by mahjabeenfatima1989

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Answer:

don't know someone who can help him or her

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