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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
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In entity-relationship modelling it is convenient to work with entity types, rather than
simply entity occurrences. In much the same way, object-oriented modelling uses the
concept of an object class (or class for short) to represent all occurrences (or instances)
of an object that have the same definition (attributes + operations). (Some authors
distinguish between an object type, which is an implementation-free concept, and an
object class, which is an implementation construct.)
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Object-oriented modelling also differs from the basic relational model in that the
former favours the use of more complex data structures ...
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Publisher Resources

ISBN: 9780750650861