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What are two virtual tables available during database trigger execution ?

April 26, 2017database execution tables Trigger virtual

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What are two virtual tables available during database trigger execution ?

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The table columns are referred as OLD.column_name and NEW.column_name. For triggers related to INSERT only NEW.column_name values only available. For triggers related to UPDATE only OLD.column_name NEW.column_name values only available. For triggers related to DELETE only OLD.column_name values only available.