Elby,
Friday, June 28, 2002, 11:13:52 PM, you wrote:
EV> create table person(
EV> id_person smallint not null primary key auto_increment,
EV> name varchar(10));
EV> create table friends(
EV> id_friend smallint not null primary key auto_increment,
EV> age smallint,
EV> id_person smallint not null,
EV> foreign key (id_person) references person (id_person));
EV> For example:
EV> I put a row in table PERSON with "id_person = 1"
EV> If I try to put in table FRIENDS "id_person = 7", I get...why?
EV> Should not give error?
EV> And the referential integrity?
I guess your table is not InnoDB, they are MyISAM :)
If you want to have foreign key constraints, you must use InnoDB table
type:
http://www.mysql.com/doc/S/E/SEC446.html
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