16. The article of manufacture of claim 14 , wherein there is a join in the outlier materialized query table and wherein operations for identifying the set of algebraic rules further comprise: determining that join predicates other than the outlier predicate in the outlier materialized query table have matching predicates in the query.
16. The article of manufacture of claim 14 , wherein there is a join in the outlier materialized query table and wherein operations for identifying the set of algebraic rules further comprise: determining that join predicates other than the outlier predicate in the outlier materialized query table have matching predicates in the query. 19. The article of manufacture of claim 16 , wherein the query contains a correlation predicate.