Query


PROJ1 = SEL(LOC = "New York") PROJ
PROJ2 = SEL(LOC != "New York") PROJ
ASG1 = ASG SEMIJOIN PROJ1 (PNO)
ASG2 = ASG SEMIJOIN PROJ2 (PNO)
EMP1 = SEL(TITLE = "Elect. Eng." OR "Syst. Anal.") EMP
EMP2 = SEL(TITLE = "Mech. Eng." OR "Programmer") EMP

Query Decomposition

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Basic Computer Science: Query
Reference No:- TGS0624289

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