DATABASE VIEW NOTES:
Owner - Owner of the view
View Name - Name of the view
Created - Date/time view was created
Status - Status of the view
Views are virtual looks at tables. They don't exist until queried except as a specification statement stored in the database.
A single view can be very efficient, but the "stacking" of views, that is, views that reference views that reference views, can show a performance problem.
If you attempt to create a view using grants received from a role you will get an ORA-01933 error. You must have direct grants on all objects used in the view definition.