An enterprise has got a lot of offices around the country. Each office is identified by an unique code and is characterized by the city the office's in, full address (street, number, postal code) and phone number.

In each office there's available a set of cars, and from the cars we know the car plate, the group (A,B,C..) depending on the type of car and it's size. We also know the brand, model name, number of doors, seats, capacity of the trunk.

The enterprise logs all the rents it has got, specifying the name of the driver, it's ID, it's address, it's phone number and credit card number. Also, for each rent, we save the rent time (in days), the insurance type and the total price.