Database Modeling & Design Fourth Edition- P14 pot

... data modeling process. Special cases, such as dependencies among data elements of unrelated entities, can be handled when they are identified in the ensuing data analysis. The logical database design ... cycle and is typically the most labor intensive. The database designer must interview the end user population and determine exactly what the database is to be used for and what it...

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... R5: DFJ (F->DJ with key F) R2: AEF (A->EF with key A) R6: DKLMNP (D->KLMNP, L->D, with keys D, L) R3: EG (E->G with key E) R7: PQRT (PQR->T with key PQR) R4: DGI (G->DI with ... Projections skill_required emp_id proj_no skill_type MVDs(nontrivial) 101 3 A proj_no ->> skill_type 101 3 B proj_no ->> emp_id 101 4 A 101 4 C 102 3 A 102 3 B 103 5 D skill_req1 skil...

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... data modeling. Dimensional Data Modeling The dimensional modeling approach is quite different from the normaliza- tion approach typically followed when designing a database for daily oper- ations. ... completeness. Dimensional Design Process We adhere to the four-step dimensional design process promoted by Kim- ball and Ross. Figure 8.5 outlines the activities in the four-step pro...

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... the modeling of normal forms and denormalization to develop a true physical schema for your database, as described in Chapter 5. The tools provide graphical interfaces for physi- cal database design ... and database design. All of these products provide the ability to graphically represent ER relationships. These tools also provide transformation processes to map from an ER model in...

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... by a DBMS. database life cycle—An enumeration and definition of the basic steps in the requirements analysis, design, creation, and maintenance of a database as it evolves over time. database management ... query. fourth normal form (4NF)—A table is in fourth normal form (4NF) if and only if it is at least in BCNF and if whenever there exists a nontrivial multivalued dependency of...

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... 109 constraints, 217 UML constructs, 42 QDesigner, 190 Query optimization, 177–78 Rational Data Architect, 188, 189, 211 automatic computing linkages, 198 ER modeling, 193 property editing, 195 XML ... 69 techniques, 69 type conflict, 71 Views, 166 coordinates of, 178 creating, 229 dynamic selection, 176 ER modeling based on requirements, 61–63 exponential explosion, 167–69 size estimatio...

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

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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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