Exercise relationalgebra.cnf

Description
To conjunctive normal form

Derivation

(V- ; s)- \/ ((s ; V-) ; (s /\ q) \/ s)-

⇒ relationalgebra.remredunexprs

V-- \/ ((s ; V-) ; (s /\ q) \/ s)-

⇒ relationalgebra.doublenegation

V \/ ((s ; V-) ; (s /\ q) \/ s)-

⇒ relationalgebra.remredunexprs

V