INSERT INTO COPY(BOOK_ID,ISBN,COPY_ID,ONLOAN) VALUES ('003','31234000000003',1,NULL);
INSERT INTO COPY(BOOK_ID,ISBN,COPY_ID,ONLOAN) VALUES ('048','31234000000048',1,NULL);
INSERT INTO COPY(BOOK_ID,ISBN,COPY_ID,ONLOAN) VALUES ('049','31234000000049',1,NULL);
INSERT INTO COPY(BOOK_ID,ISBN,COPY_ID,ONLOAN) VALUES ('050','31234000000050',1,NULL);