Database Modeling & Design Fourth Edition- P31 docx
Database Modeling & Design Fourth Edition- P31 docx
... growth should be estimated, as each
will have significant effect on the later stages of database design.
7.1.1 Design Problems
1. Using the information given and, in particular, the five assertions,
derive ... relationship.
a. one-to-one-to-one => three overlapping composite keys, at
least BCNF
b. one-to-one-to-many => two overlapping composite keys, at
least BCNF
c. one-to-many-t...
Database Modeling & Design Fourth Edition- P6 docx
... concepts
that can be applied to the conceptual data modeling phase of the
database life cycle. In Section 2.1, we will look at the simple level of ER
modeling described in the original work by Chen ... all occurrences of that entity depend on an associated
(strong) entity for their existence in the database. For example, in Figure
2.1, the weak entity Employee-job-history is related to...
Database Modeling & Design Fourth Edition- P21 docx
... resulting table. The two
key attributes are taken from the same domain but are given different
names to designate their unique use. The one-to-many relationship
requires a foreign key in the resulting
Database Modeling & Design Fourth Edition- P30 docx
... with MVDs A ->>
B and CD ->> EF. The first decomposition of R is into two tables R1(A,B)
and R2(A,C,D,E,F) by applying the MVD A ->> B and its complement
A->>CDEF. Table ... CD ->> EF and its
complement CD ->> A. Both R21 and R22 are now 4NF. If we had
applied the MVD complement rule in the opposite order, using CD ->>
EF and its complement CD ->&g...
Database Modeling & Design Fourth Edition- P39 docx
... approaches are used to extract knowledge from a database.
First, a user may have a hypothesis to verify or disprove. This type of
analysis is done with standard database queries and statistical analysis.
The ... experiment with and modify existing algorithms. The
major database vendors also offer data mining packages that function
with their databases.
Due to the large scope of data min...
Database Modeling & Design Fourth Edition- P1 pptx
... Teorey.book Page iv Saturday, July 16, 2005 12:57 PM
Database Modeling & Design Fourth Edition- P2 ppsx
... Database Modeling
& Design:
Logical Design
Fourth Edition
TOBY TEOREY
SAM LIGHTSTONE
TOM NADEAU
AMSTERDAM • BOSTON ... Cerra
Publishing Services Manager Simon Crump
Editorial Assistant Asma Stephan
Cover Design Yvo Riezebos Design
Cover Image Getty Images
Composition Multiscience Press, Inc.
Technical Illustration ... CA 94111
This book is printed on acid-free paper.
© 2006...
Database Modeling & Design Fourth Edition- P3 doc
... available to
help design the most efficient databases. This book is devoted to the
logical design methodologies and tools most popular for relational
databases today. Physical design methodologies ... Tools for Logical Database Design 187
9.1 Introduction to the CASE Tools 188
9.2 Key Capabilities to Watch For 191
9.3 The Basics 192
9.4 Generating a Database from a Design 196
9....
Database Modeling & Design Fourth Edition- P4 ppsx
... the
approach to designing large relational databases by reducing the
Teorey.book Page 6 Saturday, July 16, 2005 12:57 PM
1.2 The Database Life Cycle 3
1.2 The Database Life Cycle
The database life ... requirements
Physical design
Logical design
Implementation
Teorey.book Page 4 Saturday, July 16, 2005 12:57 PM
1.2 The Database Life Cycle 5
b.View integration. Usually, when the d...
Database Modeling & Design Fourth Edition- P5 ppt
... data modeling and database design techniques is impor-
tant for database practitioners and application developers. The database
life cycle shows the steps needed in a methodical approach to designing
a ... data
modeling and logical database design examples throughout this book.
In conceptual data modeling, the overriding emphasis is on simplic-
ity and readability. The goal o...
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