 for a table or view. So for the parser, a
    materialized view is a relation, just like a table or a view.  When
    a materialized view is referenced in a query, the data is returned
    directly from the materialized view, like from a table; the rule is
    only used for populating the materialized view.</P
><P
>    While access to the data stored in a materialized view is often much
    faster than accessing the underlying tables directly or through a view,
    the data is not always current; yet somet