6. The method of claim 4 , wherein there is a join in the outlier materialized query table and wherein identifying the set of algebraic rules: determining that join predicates other than the outlier predicate in the outlier materialized query table have matching predicates in the query.
4. The method of claim 1 , wherein identifying the set of algebraic rules further comprises: creating a first query graph model representation of the query; creating a second query graph model representation of the outlier materialized query table; and comparing the first query graph model and the second query graph model.