Which two statements are true regarding views? (Choose two.)
A.
A subquery used in a complex view definition cannot contain group functions or joins.
B.
Rows cannot be deleted through a view if the view definition contains the DISTINCT
keyword.
C.
Rows added through a view are deleted from the table automatically when the view is
dropped.
D.
The OR REPLACE option is used to change the definition of an existing view without
dropping and re-creating it.
E.
The WITH CHECK OPTION constraint can be used in a view definition to restrict the
columns displayed through the view.
F.
A simple view in which column aliases have been used cannot be updated.