On Wednesday 19 February 2003 13:58, Prabu Subroto wrote:
> > I did something very stupid in my development. I
> > created a database with a couple of tables...but I
> > forgot to defining the foreign key and the primary
> > key
> > So if my user updated a record of one table than the
> > corresponding row on related table will not be
> > updated
> > too. That's why I had to write additional function
> > to
> > update the others related tables which are necessary
> > to be updated too.
> >
> > Is it possible to define Foreign Key and Primary Key
> > of my database after the tables have been created ?
> > If yes, how?
Yes, use ALTER TABLE statement:
http://www.mysql.com/doc/en/ALTER_TABLE.html
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