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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
Questions
1. (a) Write down a pair of enterprise rules which would define a 1:many
relationship ‘TaughtBy’, in the direction Course to Lecturer.
(b) Express your rules in the form of determinancy constraints, assuming Course and
Lecturer have identifiers courseNo and lecturerName, respectively. (1min)
2. What is the minimum number of relationship occurrences which must be deleted
from Fig. 9.1b to make the resulting diagram consistent with a 1:1 relationship? Does
the resulting diagram necessarily imply a 1:1 relationship? (1 min)
3. What is the minimum number of relationship occurrences which must be deleted
from Fig. 9.1c to make the resulting diagram ...
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Publisher Resources

ISBN: 9780750650861