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Please do it ASAP 2. (4 points) Given two relation schemas P(A,B,C,D) and Q(C,E,F,G), there are two equivalent algebra expressions E1 and E2. Try to
Please do it ASAP
2. (4 points) Given two relation schemas P(A,B,C,D) and Q(C,E,F,G), there are two equivalent algebra expressions E1 and E2. Try to analysis and discuss which has better performance . E1=A(B=EG=99(PQ))E2=A(B=E(P(G=99(Q)))Step by Step Solution
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Visual Basic6 Database Programming
Authors: John W. Fronckowiak, David J. Helda
1st Edition
0764532545, 978-0764532542
