from django.db import models

class Address(models.Model):
    address =
    zip_code = 
    city =
    country =

class Person(models.Model):
    name = models.CharField(max_length=200)
    surname = models.CharField(max_length=200)
    address =
    nationality =
    email = 
    phone =
    
class Company(models.Model):
    name = 
    address = 
    siret =

class Insurance(Company):
    pass

class Boat(models.Model):
    name = 
    registration_num = 
    length = 
    beam = 
    water_draught = 
    tonnage = 
    water_tank = 
    model = 
    heating =

class Port(models.Model):
    name = 
    address =

class Dock(models.Model):
    num =
    length =
    width =
    depth =

class Plug(models.Model):
    num = 
    amperage = 
    voltage = 

class Tap(models.Model):
    num =

class Stay(models.Model):
    arrival = models.DateTimeField('date published')
    departure = models.DateTimeField('date published')
    coming_from = 
    going_to =
    
class Payment(models.Model):
  num =
  date = models.DateTimeField('date published')
  pay_type =
  value =
  
class Bill_line(models.Model):
  service = 
  amount = 
  
class Service(models.Model):
  service_type = 
  
  
# Create your models here.