I have a problem . I am doing a PHP -My SQL project . I got to store author/s of a conference paper in a database . But sometimes its just 1 and sometimes it can be 2 or 3 or 10 . So how do i store this without creating rows like author1 ,author 2, ... author n . As for each conference papaer the number of authors will be different .How do i design the table , please help

conference paper table

authors table