INSERT INTO dist_obj (Dno, Dname, Daddress) VALUES (1, 'Yahoo', 'Funeral Home');

As your setting the number as 1 it will appear before Google and Bing as they are 12 and 13. You can also enter the below as an example.

INSERT INTO dist_obj (Dno, Dname, Daddress) VALUES (4, 'Ask', 'forgotten about');


You can delete yahoo as follows

DELETE FROM dis_obj WHERE Dno = 1

or as

DELETE FROM dis_obj WHERE Dname = 'Yahoo'

Hope this helps