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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
chemistry content. If so, the missing value from row 3 would have been chemistry.
There is no way of deducing from the table that the missing value was in fact
biology.
Questions
1. The table SupplierPart (supplierNo, partNo) is subject to the enterprise rules:
(a) a supplier may supply many parts;
(b) a part may be supplied by many suppliers;
(c) every supplier must supply parts P1 and P2.
Explain why SupplierPart will contain redundant data. Suggest a table structure which
avoids redundancy. (3 min)
2. The table Supply (supplierNo, partNo, projectNo) shows which suppliers supply
which parts to which projects. State an enterprise rule such that Supply ...
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Publisher Resources

ISBN: 9780750650861