from django.db import models

class Payer(models.Model):
    name = models.CharField(max_length = 400)

class Payment(models.Model):
    date = models.DateField()
    payer = models.ForeignKey('Payer')
    tax = models.ForeignKey('Tax')
    amount = models.IntegerField()

class TaxCategory(models.Model):
    name = models.CharField(max_length = 70)

class Tax(models.Model):
    category = models.ForeignKey('TaxCategory')
    code = models.CharField(max_length = 25)
    desc = models.CharField(max_length = 400)