db.deleteClass(GoldCustomer.class);
db.deleteClass(Adress.class);
db.deleteClass(BankAccount.class);
for (int i = 0; i < MAX; i++) {
Person p = new Person("Joeckel", "Lothar");
db.store(p);
Customer customer = new Customer("CUST4711", "CUSTOMER");
customer.setFirstName("customerFirstName");
customer.setLastName("customerLastname");