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Chapter 4: The Enhanced ER Model and Business Rules

Chapter 4: The Enhanced ER Model and Business Rules

Chapter 4: The Enhanced ER Model and Business Rules. Supertypes and Subtypes. Subtype: A subgrouping of the entities in an entity type that has attributes distinct from those in other subgroupings Supertype: A generic entity type that has a relationship with one or more subtypes

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467 views • 35 slides
Chapter 4: The Enhanced ER Model and Business Rules

Chapter 4: The Enhanced ER Model and Business Rules

Chapter 4: The Enhanced ER Model and Business Rules. Modern Database Management 8 th Edition. Objectives. Definition of terms Use of supertype/subtype relationships Use of generalization and specialization techniques Specification of completeness and disjointness constraints

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442 views • 35 slides
Chapter 3: The Enhanced E-R Model

Chapter 3: The Enhanced E-R Model

Modern Database Management. Chapter 3: The Enhanced E-R Model. Define terms Understand use of supertype/subtype relationships Understand use of specialization and generalization techniques Specify completeness and disjointness constraints

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696 views • 31 slides
Chapter 4: The Enhanced ER Model and Business Rules

Chapter 4: The Enhanced ER Model and Business Rules

Chapter 4: The Enhanced ER Model and Business Rules. Modern Database Management Jeffrey A. Hoffer, Mary B. Prescott, Fred R. McFadden. Objectives. Definition of terms Use of supertype/subtype relationships Use of generalization and specialization techniques

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394 views • 30 slides
The Enhanced E-R Model

The Enhanced E-R Model

The Enhanced E-R Model. Objectives. Define terms Understand use of supertype/subtype relationships Understand use of specialization and generalization techniques Specify completeness and disjointness constraints Develop supertype/subtype hierarchies for realistic business situations

★ ★ ★ ★ ★

312 views • 29 slides
Chapter 4: The Enhanced ER Model and Business Rules

Chapter 4: The Enhanced ER Model and Business Rules

Chapter 4: The Enhanced ER Model and Business Rules. Supertypes and Subtypes. Subtype: A subgrouping of the entities in an entity type that has attributes distinct from those in other subgroupings Supertype: A generic entity type that has a relationship with one or more subtypes

★ ★ ★ ★ ★

418 views • 28 slides

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