Question:You want to manipulate some value in the database upon updation in a trigger function. Which line of the code would be appropriate? 

A IF TG_RELID = ''UPDATE'' THEN --Modify the database value END IF; 
B IF TG_NAME = ''UPDATE'' THEN --Modify the database value END IF; 
C IF TG_OP = ''UPDATE'' THEN --Modify the database value END IF; 
D IF TG_ARGV = ''UPDATE'' THEN --Modify the database value END IF; 

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C 

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Md. Habib Ullah

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