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(k) To change the age of the patient Kush to 20.
(l) To increase the charges of all the patients by 5%.
(m) To remove the record of the patient whose Name is Tarun.
(n) To add another column WardNumber of the type Number in the above table.
(o) To set charges to NULL for all the patients in the Surgery department.
(p) To decrease the charges by 10% of all the patients admitted in the Cardiology department.
