Chapter 2 - Data Models
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Demonstration of building basic ERD Chapter 2 - Data Models
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Chapter 2 - Data Models. Demonstration of building basic ERD. DealCo Relational Diagram. I will complete problem 4 and 5 from your book (page 59)in this demo. - PowerPoint PPT Presentation
Transcript of Chapter 2 - Data Models
Demonstration of building basic ERD
Chapter 2 - Data Models
DealCo Relational Diagram I will complete problem 4 and 5 from your book (page
59)in this demo.
Our Midwest region contains several stores, 2 in Missouri, one in Kansas (etc..). Each of our stores employs between 50 to 75 employees each. Yes, we have several job titles and each employee has a job to do. In our Kansas City store, Jim is the manager, Mark, Sue and Bob are assistant managers, Kim and Jeff are a couple of our cashiers. And so on, and so on………
Demo for building DealCo ERD
containsis assigned to
One Region contains many StoresEach Store belongs in one Region
One Store has many EmployeesEach Employee is employed by one Store
One Job title is assigned to many EmployeesEach Employee has one Job title
1:M
1:M1:M
Write all the
Business Rules
Identify each
Relationship Type
references
The End
Until Next Time
