Hi,
i try to

* Views are stored SQL-Queries, but no view-data is stored.
* Mviews are stored SQL-Quries to local or far objects, the view-data is stored locally and refreshed by specific interval. Mviews are not new, they derived from snapshots.
Oracle uses Mviews for more, for example with query-rewrite to speed up aggragated data-access.

Orca