Exercise relationalgebra.cnf
Description
To conjunctive normal form
Derivation
(V- ; s)- \/ (V- ; (s /\ q) \/ s)-
⇒ relationalgebra.remredunexprsV-- \/ (V- ; (s /\ q) \/ s)-
⇒ relationalgebra.doublenegationV \/ (V- ; (s /\ q) \/ s)-
⇒ relationalgebra.remredunexprsV