Với lệnh ALTER, bạn cần phải tôn trọng các quy tắc toàn vẹn của cơ sở dữ liệu trước khi ra tuyên bố thả. Ví dụ, bạn có thể thả một bảng cơ sở cung cấp các phím nước ngoài vào một bảng quan hệ. Hãy xem xét các mối quan hệ-Vị trí nhân viên thể hiện trong hình 2-9. | Java Data Access JDBC JNDI and JAXP Todd M. Thomas 0 o Features coverage of JDBC Java Data Access JDBC JNDI and JAXP Todd M. Thomas Published by M T Books An imprint of Hungry Minds Inc. 909 Third Avenue New York NY 10022 http Copyright 2002 Hungry Minds Inc. All rights reserved. No part of this book including interior design cover design and icons may be reproduced or transmitted in any form by any means electronic photocopying recording or otherwise without the prior written permission of the publisher. Library of Congress Control Number 2001092891 ISBN 0-7645-4864-8 Printed in the United States of America 10 9 8 7 6 5 4 3 2 1 1O RR QR QS IN Distributed in the United States by Hungry Minds Inc. Distributed by CDG Books Canada Inc. for Canada by Transworld Publishers Limited in the United Kingdom by IDG Norge Books for Norway by IDG Sweden Books for Sweden by IDG Books Australia Publishing Corporation Pty. Ltd. for Australia and New Zealand by TransQuest Publishers Pte Ltd. for Singapore Malaysia Thailand Indonesia and Hong Kong by Gotop Information Inc. for Taiwan by ICG Muse Inc. for Japan by Intersoft for South Africa by Eyrolles for France by International Thomson Publishing for Germany Austria and Switzerland by Distribuidora Cuspide for Argentina by LR International for Brazil by Galileo Libros for Chile by Ediciones ZETA . Ltda. for Peru by WS Computer Publishing Corporation Inc. for the Philippines by Contemporanea de Ediciones for Venezuela by Express Computer Distributors for the Caribbean and West Indies by Micronesia Media Distributor Inc. for Micronesia by Chips Computadoras . de . for Mexico by Editorial Norma de Panama . for Panama by American Bookshops for Finland. For general information on Hungry Minds products and services please contact our Customer Care department within the . at 800-762-2974 outside the . at 317-572-3993 or fax 317-572-4002. For sales inquiries and reseller information including .
