QUESTION 48 You need to implement a virtual private database (vpd). In order to have the vpd functionality, a trigger is required to fire when every user initiates a session in the database. What type of trigger needs to be created?
(A) DML trigger
(B) System event trigger
(C) INSTEAD OF trigger
(D) Application trigger

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統計: A(1), B(1), C(4), D(0), E(0) #912610