Hi, Read http://www.postgresql.org/docs/8.4/static/sql-createtable.html
> 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 <sheep...@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
