Rewrites: SIPs
•Select E.eid, E.sal
•From Emp E, Dept D, DepAvgSal V
•Where E.did=D.did AND D.did=V.did
•   And  E.age < 30 and D.budget > 100k
•   And  E.sal > V.avgsal
•DepAvgsal needs to be evaluated only for departments where V.did IN
•   Select E.did
•   From   Emp E, Dept D
•   Where  E.did=D.did
•      And   E.age < 30  and D.budget > 100K