initializing

INSERT INTO products
VALUES (NULL,'PhotoshopCS5','16.69','software',null);
INSERT INTO products
VALUES (NULL,'Digital watch','239.99','hardware',null);
INSERT INTO products
VALUES (NULL,'Controller','99.99','games',null);
INSERT INTO products
VALUES (NULL,'Razer mouse','149.99','electronics',null);
INSERT INTO users
VALUES (NULL,'Emma','Watson','Champs Elysées','FR');
INSERT INTO users
VALUES (NULL,'Ben','Affleck','Berkeley 3','USA');
INSERT INTO users
VALUES (NULL,'Robert','Downey Jr.','Manhattan 101','USA');
INSERT INTO users
VALUES (NULL,'Ben','Kingsley','Scarborough 6','UK');
INSERT INTO orders
VALUES (NULL,'2016.01.01',16.69,1);
INSERT INTO orders
VALUES (NULL,'2015.12.30',239.99,2);
INSERT INTO orders
VALUES (NULL,'2016.01.06',99.99,3);
INSERT INTO orders
VALUES (NULL,'2015.10.10',149.99,4);
INSERT INTO orderlines
VALUES (NULL,1,1,16.69);
INSERT INTO orderlines
VALUES (NULL,2,2,239.99);
INSERT INTO orderlines
VALUES (NULL,3,3,99.99);
INSERT INTO orderlines
VALUES (NULL,4,4,149.99);