1. A system, comprising: a creation time logic to identify a materialized view, to create a containment expression associated with the materialized view, and to relate the containment expression to the materialized view; and an execution time logic to receive a query that includes a bind variable and to dynamically range over one or more materialized views to determine whether to employ a materialized view to process the query based, at least in part, on evaluating one or more containment expressions related to the one or more materialized views.