Question

database triggers do not execute implicitly when DML operations on a table occur

Answer 1

Answer:

Database Triggers

If a triggering statement affects no rows, a row trigger is not executed at all. Row triggers are useful if the code in the trigger action depends on data provided by the triggering statement or rows that are affected.

22 Triggers

Triggers are implicitly fired by Oracle when a triggering event occurs, ... Modify table data when DML statements are issued against views.