QUESTION 7 Consider the syntax given below. The optional [for each row] clause specifies CREATE OR REPLACE TRIGGER trigger_name [BEFORE / AFTER] [DELETE / INSERT /UPDATE OF column_name] ON table_name [FOR EACH ROW] [DECLARE] [variable_namedata type[:=initial_value] ] BEGIN PL/SQL instructions; ... END; OA. A table with index OB. A table with referential integrity constrain OC.A table with primary key

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