Database Modeling & Design Fourth Edition- P16 pptx

... model is transformed to SQL tables. In summary, the application of the ER model to relational database design offers the following benefits: • Use of an ER approach focuses end users’ discussions ... follow easily from real-world require- ments. 4.4 View Integration A critical part of the database design process is step II(b), the integration of different user views into a unified,...

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... Teorey.book Page iv Saturday, July 16, 2005 12:57 PM

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... integrity constraint has become integral to relational database design and is usually implied as requirements for the resulting relational database implementation. (Chapter 5 discusses the SQL ... also be written in another form, using an arrow (->) in a kind of shorthand called a functional dependency. For example: emp-id, project-name -> mgr-id where emp-id is the key (unique...

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... entities. Object-oriented design provides arguably a better way to model this situation [Muller, 1999]. 4.3.4 Example of Data Modeling: Company Personnel and Project Database ER Modeling of Individual ... transitivity Project located-in located-in City City lives-in works-in belongs-to works-on * * * * 1 * * 1 1 1 1 1 Teorey.book Page 59 Saturday, July 16, 2005 12:57 PM 4.3 Conceptual...

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... here). select cust_name, cust_num, credit_level from customer where address = 'Enterprise' and credit_level > 7 order by cust_name asc; customer name customer number credit level Bones ... number. select c.*, o.* from customer as c, order as o where c.cust_num = o.cust_num and c.credit_level < 7 order by cust_no asc; cust. no. cust. name address credit level order no. item...

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... o.cust_num from order as o where o.item_num = any (select i.item_num from item as i where i.price > 1000)); customer name Khan Kirk Scotty Sulu Uhura 3. Which customers have not ordered any ... of SQL (select o.cust_num from order as o, item as i where o.item_num = i.item_num and i.price > 100); customer name Bones 4. Which customers have only ordered items weighing more than 1...

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... illustration, 150 bus, 164 CASE tool modeling, 207–9 core requirements, 149–51 defined, 148 dimensional data modeling, 152–54 dimensional design process, 156 dimensional modeling example, 156–65 fact ... 148 Denormalization, 8 Descriptors, 15 Design patterns, 204 DeZign for Databases, 190 Dimensional data modeling, 152–54 example, 156–65 process, 156 See also Data modeling Dimens...

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... 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...

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... 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....

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... 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...

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