public static boolean modifyRow (Object bean, String field) {
		
		PreparedStatement stmt = null;
		
		try{
			if(bean instanceof Patient){
				return modifyPatient((Patient)bean, stmt, field);
			}
			if(bean instanceof Employee){
				return modifyEmployee((Employee)bean, stmt, field);
			}
			if(bean instanceof Drug){
				return modifyDrug((Drug)bean, stmt, field);
			}
			if(bean instanceof Prescription){
				return modifyPrescription((Prescription) bean, stmt, field);
			}
			if(bean instanceof Schedule){
				return modifySchedule((Schedule)bean, stmt, field);
			}
		}catch(SQLException e){
			System.out.println("SQLException within modifyRow()");
			System.out.println(e);
		}finally{
			if(stmt != null)
				try {
					stmt.close();
				} catch (SQLException e) {
					System.out.println("unable to close stmt within modifyRow()");
					e.printStackTrace();
				}
		}
		return false;
	}