'Employee john smith' diaporamas de présentation

Entity-Relationship Model

Entity-Relationship Model. Gang Qian Department of Computer Science University of Central Oklahoma. Overview (Chapters 7 and 9). Overview of Database Design Process ER Model Concepts Entities and Attributes Entity Types, Value Sets, and Key Attributes Relationships and Relationship Types

791 views • 56 slides

Entity-Relationship Model

Entity-Relationship Model. Outline. What is ER Model? And Why? Overview of Database Design Process Example COMPANY Database ER Model Concepts ER Diagram Alternative Diagrammatic Notations Problems with ER Models Reading Suggestion: [1]: Chapter 3 [2]: Chapter 11

551 views • 54 slides

Topics

Data Modeling Using the Entity-Relationship (ER) Data Model (Based on Chapter 3 in Fundamentals of Database Systems by Elmasri and Navathe, Ed. 3). Topics. 1 database design process 2 example database application (COMPANY) 3 ER model concepts 3.1 entities and attributes

649 views • 51 slides

Outline

Outline. What is ER Model? And Why? Example COMPANY Database ER Model Concepts ER Diagram Problems with ER Models Alternative Diagrammatic Notations. Example COMPANY Database. Requirements of the Company (oversimplified for illustrative purposes)

597 views • 51 slides

Data Modeling Using the Entity-Relationship (ER) Model

Data Modeling Using the Entity-Relationship (ER) Model. Chapter Outline. Overview of Database Design Process Example Database Application (COMPANY) ER Model Concepts Entities and Attributes Entity Types, Value Sets, and Key Attributes Relationships and Relationship Types Weak Entity Types

766 views • 50 slides

Data Modeling Using the Entity-Relationship (ER) Model

Data Modeling Using the Entity-Relationship (ER) Model. Chapter Outline. Overview of Database Design Process Example Database Application (COMPANY) ER Model Concepts Entities and Attributes Entity Types, Value Sets, and Key Attributes Relationships and Relationship Types Weak Entity Types

519 views • 50 slides

Unit Reading Assignment

522 views • 45 slides

Relational Database Design by ER-to-Relational Mapping

Relational Database Design by ER-to-Relational Mapping. Outline. Review Relational model ER model ER diagram Database design steps ER-to-Relational Mapping Algorithm Enhanced ER (EER and mapping). Relational Model Concepts.

445 views • 44 slides

Fundamentals of Database Systems Fourth Edition El Masri & Navathe

Fundamentals of Database Systems Fourth Edition El Masri & Navathe. Chapter 3 Data Modeling Using the Entity-Relationship (ER) Model. ER Model The ER model describes data as an entities , relationships , and attributes .

349 views • 16 slides