Oracle SQL trigger on update of column

Question

I\'m trying to create a trigger for my table which automatically adds a published date based on when a certain flag is set to \'Y\'

I don\'t have much experience wit

Answer 1

create or replace
  TRIGGER ADD_CREATE_DT 
  after UPDATE of approved ON articles 
  for each row
  BEGIN
    IF :NEW.approved = 'Y' THEN
      :new.create_dt := sysdate;
    END IF;
  END;