Index
Exercises
Services
Exercise
information
strategy
rules
examples
derivations
test report
Exercise relationalgebra.cnf
Description
To conjunctive normal form
Derivation
((s \/ s) /\ (s \/ s-))~
⇒
relationalgebra.idempotencyor
(s /\ (s \/ s-))~
⇒
relationalgebra.absorp
s~