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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-1 David M. Kroenke’s Chapter Five: Data Modeling with the Entity-Relationship Model Part Three Database Processing: Fundamentals, Design, and Implementation
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-2 Mixed Patterns: The Line-Item Pattern
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-3 Mixed Patterns: The Line-Item Pattern
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-4 Mixed Patterns: Other Mixed Patterns Look for a mixed pattern where: –A strong entity has a multivalued composite group, and –One of the elements of the composite group is an identifier of another strong entity
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-5 Mixed Patterns: Other Mixed Patterns
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-6 Mixed Patterns: Other Mixed Patterns
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-7 Mixed Patterns: The For-Use-By Pattern
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-8 Mixed Patterns: The For-Use-By Pattern
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-9 Recursive Relationships A recursive relationship occurs when an entity has a relationship to itself
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-10 Recursive Patterns: 1:1 Recursive Relationship
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-11 Recursive Patterns: 1:N Recursive Relationship
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-12 Recursive Patterns: N:M Recursive Relationship
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DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall 5-13 David M. Kroenke’s Database Processing Fundamentals, Design, and Implementation (10 th Edition) End of Presentation: Chapter Five Part Three
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