/* 
 * 
 *
 * 
 */

create table prereq1 (
        course          int         not null,
        prereq          int         not null,
    primary key (course, prereq)
) ;


insert into prereq1
(course, prereq)
values
(353, 271), (353, 264),   -- warning: spaces are necessary: 353,271 = 353271
(271, 170),
(264, 216), (264, 120),
(216, 215), (216, 214),
(170, 150), (170, 140),
(409, 353),
(411, 409),
(416, 370),
(370, 353)
;