Skip to Main Content
Data Analysis for Database Design, 3rd Edition
book

Data Analysis for Database Design, 3rd Edition

by David Howe
May 2001
Intermediate to advanced content levelIntermediate to advanced
336 pages
14h 36m
English
Butterworth-Heinemann
Content preview from Data Analysis for Database Design, 3rd Edition
$QVZHUSRLQWHUV
Section 11.2
1. (a) Probably true, although to assume automatically an anthropocentric view
simply reveals one’s prejudices. It may be that it is the animals which supervise the
keepers.
(b) Probably true.
(c) The relationship implied between Keeper and Food is that of a
KeeperSupervisesAnimalWhichEatsFood relationship, not a KeeperSupervisesFood
relationship; the two can be equated only if there is some further enterprise rule such as
‘a keeper who supervises an animal also supervises the food eaten by that animal’. If
necessary, a SupervisesFood relationship could be added to the diagram.
(d) A similar situation to (c). Why is it more ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Data Quality Engineering in Financial Services

Data Quality Engineering in Financial Services

Brian Buzzelli

Publisher Resources

ISBN: 9780750650861