Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question

What is the equivalence of (( ¬R v P) ∧( ¬R v Q)) ∧ ((¬P v ¬Q) v R)?

1. (( P ↔ ( R → P )) → Q) → ( R ↔ ( P ∧ Q))
2. ( P ∧ Q) ↔ ( R → (( P → Q) ∧ ( Q →R )))
3. (R v P) → ((( ¬R v P) ∧( ¬R v Q)) ∧ ((¬P v ¬Q) v R))
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