class ContasReceber(models.Model):
    id = models.IntegerField(db_column='ID', primary_key=True) # Field name made lowercase.
    data = models.DateField(db_column='DATA') # Field name made lowercase.
    total = models.DecimalField(db_column='TOTAL', max_digits=20, decimal_places=2) # Field name made lowercase.
    status = models.CharField(db_column='STATUS', max_length=1) # Field name made lowercase.