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Congestion-Control
October 16, 2023
Subnetting
October 16, 2023
Congestion-Control
October 16, 2023
Subnetting
October 16, 2023

Functional-Dependency

Question 17
If D={R1,R2} is a decomposition of R, and F is the set of functional dependencies on R, then which of the following ensures that the decomposition D is lossless (nonadditive)?
A
((R1∩ R2) →(R1-R2)) ∈ F+
B
((R1 ∩R2) → (R1 – R2)) ∉ F+
C
((R1 ∪ R2) →(R1 – R2)) ∈ F+
D
((R1∩R2) →R1 ) ∈ F+
Question 17 Explanation: 
Correct Answer: A
Question 17 Explanation: 
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