也不是这样的。
您的主键应该是代理。 Int或big int，Guid如果缩放将是一个问题。
然后你应该把国家，省，城市和人作为一个独特的复合键。 智能数字很少是一个好主意。

Neither as such. Your primary key should be a surrogate. Int or big int, Guid if scaling is going to be an issue. Then you should have country, province, city and person as a unique compound key. The 'intelligent' number thingy is rarely a good idea.