model concept

helpMe.py

from django.db import models

class Member(models.Model):
    name = models.CharField(max_length=30, verbose_name='name')
    email = models.EmailField(verbose_name='email', blank=True)
    birth = models.DateField(verbose_name='birthday', blank=True)
    rdate = models.DateField(verbose_name='reg.date')
    def __unicode__(self):
        return self.name
    class Meta:
        ordering = ['name']
        verbose_name = 'members'

class Asset(models.Model):
    name = models.ForeignKey(Member, verbose_name='name')
    money = models.IntegerField(verbose_name='money',blank=True)
    date = models.DateField(verbose_name='date')
    def __unicode__(self):
        return self.name.name
    class Meta:
        ordering = ['-date']
        verbose_name = 'asset'

class Salary(models.Model):
    name = models.ForeignKey(Member, verbose_name='name')
    money = models.IntegerField(verbose_name='money',blank=True)
    date = models.DateField(verbose_name='date')
    def __unicode__(self):
        return self.name.name
    class Meta:
        ordering = ['-date']
        verbose_name = 'salary'