Re: What is the difference of foreign key?

Поиск
Список
Период
Сортировка
От serge.fonville
Тема Re: What is the difference of foreign key?
Дата
Msg-id 680cbe0e0909240726m3fbd94cak1ee2436a52679288@mail.gmail.com
обсуждение исходный текст
Ответ на What is the difference of foreign key?  (纪晓曦 <sheepjxx@gmail.com>)
Список pgsql-general
Дерево обсуждения
Hi,
 
REFERENCES reftable [ ( refcolumn ) ] [ MATCH matchtype ] [ ON DELETE action ] [ ON UPDATE action ] (column constraint)
FOREIGN KEY ( column [, ... ] ) REFERENCES reftable [ ( refcolumn [, ... ] ) ] [ MATCH matchtype ] [ ON DELETE action ] [ ON UPDATE action ] (table constraint)

HTH
 
Regards,
 
Serge Fonville
 
On Thu, Sep 24, 2009 at 4:18 PM, 纪晓曦 <sheepjxx@gmail.com> wrote:
To be precise,
 
The difference between

create table a (
     foreign key (id) referenced by b(name),
);

create table b(
      id  integer referenced by b(name),
);



--
Convince Google!!
They need to support Adsense over SSL
https://www.google.com/adsense/support/bin/answer.py?hl=en&answer=10528
http://www.google.bg/support/forum/p/AdSense/thread?tid=1884bc9310d9f923&hl=en

В списке pgsql-general по дате отправления:

Предыдущее
От: sheepjxx
Дата:
Сообщение: What is the difference of foreign key?
Следующее
От: Selena Deckelmann
Дата:
Сообщение: Re: Looking for way to replicate master db to multiple mobile databases