text: USE Aromaterapia
  IF EXISTS (SELECT name FROM sysobjects
        	   WHERE name = 'UpdateFunc' AND type = 'TR')
     DROP TRIGGER UpdateFunc
  GO
  
  
  CREATE TRIGGER UpdateFunc
  ON Oils
  AFTER UPDATE
  AS
  IF UPDATE(Descripcion)
  	INSERT INTO TriggerMessages (TriggerName, MessageText)
  	VALUES ('UpdateFunc', 'Descripcion Modificada')
  IF UPDATE(OilName)
  	INSERT INTO TriggerMessages (TriggerName, MessageText)
  	VALUES ('UpdateFunc', 'OilName Modificado ')