Oracle : Ошибка ORA-25001

"cannot create this trigger type on this type of view"
*Cause: INSTEAD OF triggers can be created on any view which is not an
Editioning View, while BEFORE and AFTER triggers may only be
created on Editioning Views.
*Action: Change the trigger type to INSTEAD OF or change the view on which
you are attempting to create a DML trigger.

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