'Binary relationship' presentation slideshows

Chapter 7 Data Modeling Using the Entity-Relationship (ER) Model

Chapter 7 Data Modeling Using the Entity-Relationship (ER) Model. Entity Relationship Model (ER). ER model was proposed by Peter Chen in 1976 ER model has become the standard tool for conceptual schema design

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Entity-Relationship Model and Enhanced Entity-Relation Model

Entity-Relationship Model and Enhanced Entity-Relation Model. Outline. Data Models Notation basics Understanding types of relationship Generalization/Specialization hierarchies. Data Models.

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CIS 4365 Entity Relationship Diagrams

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Chapter 7 Data Modeling Using the Entity-Relationship (ER) Model

Chapter 7 Data Modeling Using the Entity-Relationship (ER) Model. Chapter 7 Outline. Using High-Level Conceptual Data Models for Database Design A Sample Database Application Entity Types, Entity Sets, Attributes, and Keys

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CIS 4365 Entity Relationship Diagrams

508 views • 35 slides

Data Modeling with ERD

Data Modeling with ERD. BUS 782. Entities. An entity is a person, place, object, event, or concept in the user environment about which the organization wishes to maintain data. Person: Employee, Student, patient Place: Warehouse, Store Object: Product, Machine.

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Database Theoretic Basis Entity Relationship (E-R) Modeling

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The Relational Database Design

The Relational Database Design. ER- and EER-to-Relational Mapping. ER to Relational Mapping. Mapping of regular entity types Multivalued attributes Mapping of relationship Binary relationship N-ary relationship Mapping of weak entity types Mapping of specialization and generalization.

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Summary of the lecture

Summary of the lecture. We introduced the instantiation dependency This is a binary relationship (a relationship between two classes). It is directional, from a source class to a target class

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