TAILIEUCHUNG - Database System: Chapter 5 - Data Modeling Using the (Enhanced) Entity-Relationship (E-ER) Model

Database System: Chapter 5 - Data Modeling Using the (Enhanced) Entity-Relationship (E-ER) Model provides about Example Database Application (COMPANY), ER Model Concepts, ER Diagrams - Notation, ER Diagram for COMPANY Schema, Enhanced Entity Diagram. | Chapter 5 Data Modeling Using the (Enhanced) Entity-Relationship (E-ER) Model Copyright © 2004 Pearson Education, Inc. 5/14/2020 4:10:15 AM Outline Example Database Application (COMPANY) ER Model Concepts Entities and Attributes Entity Types, Value Sets, and Key Attributes Relationships and Relationship Types Weak Entity Types Roles and Attributes in Relationship Types ER Diagrams - Notation ER Diagram for COMPANY Schema Enhanced Entity Diagram Slide 5 - Example COMPANY Database Requirements of the Company (oversimplified for illustrative purposes) The company is organized into DEPARTMENTs. Each department has a name, number and an employee who manages the department. We keep track of the start date of the department manager. Each department controls a number of PROJECTs. Each project has a name, number and is located at a single location. Slide 5 - Example COMPANY Database (Cont.) We store each EMPLOYEE’s social security number, address, salary, sex, and birthdate. Each

• Cơ sở dữ liệu
• Database System
• Data Modeling Using the Entity Relationship Model
• Example Database Application
• R Model Concepts
• ER Diagrams Notation
• ER Diagram for COMPANY Schema
• Database system concepts
• Lecture Database system concepts
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• Database languages
• Database design
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• Relational database design
• Lecture Database System
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• Entity relationship model
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