foreign key constraint problem: ------------------------------- create table stud(rno integer not null, name char(10), primary key(rno));
create table mark(rno integer not null references stud, mark integer); mysql> insert into stud values(1,'a'); Query OK, 1 row affected (0.22 sec) mysql> insert into stud values(2,'b'); Query OK, 1 row affected (0.00 sec) mysql> select * from stud; +-----+------+ | rno | name | +-----+------+ | 1 | a | | 2 | b | +-----+------+ 2 rows in set (0.06 sec) mysql> insert into mark values(3,5); Query OK, 1 row affected (0.00 sec) mysql> select * from mark; +-----+------+ | rno | mark | +-----+------+ | 3 | 5 | +-----+------+ 1 row in set (0.05 sec) how is it possible. there is no rollno 3 in the stud table, then how does it accept the rollno 3 in the mark table. does foreign key really working, or i am doing something wrong. please help me, thank you in advance, vishnu. how can i convert the default date format to the format 'dd-mm-yyyy'. or how can i insert the date in the format 'dd-mm-yyyy'. __________________________________________________ Do you Yahoo!? Yahoo! Web Hosting - establish your business online http://webhosting.yahoo.com --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
