On Saturday 15 March 2003 04:08, vishnu mahendra wrote:
> create table stud(rno integer not null,
> name char(10),
> primary key(rno));
>
> create table mark(rno integer not null references
> stud,
> mark integer);
[skip]
> 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.
REFERENCES do nothing in MySQL for all table types except InnoDB tables. How
to use FOREIGN KEY CONSTRAINTS on InnoDB table look at:
http://www.mysql.com/doc/en/SEC457.html
> how can i convert the default date format to the
> format
> 'dd-mm-yyyy'.
Use DATE_FORMAT() function:
http://www.mysql.com/doc/en/Date_and_time_functions.html
> or how can i insert the date in the format
> 'dd-mm-yyyy'.
You can't if you want to store as DATE/DATETIME column type.
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