PPT Slide
Multi-way Relationships
Roles in Relationships
Attributes on Relationships
Design Principles
What’s Wrong?
Do we really need 3-way relationships?
Modeling Subclasses
Subclasses in ODL
Multiple Inheritance
How do we resolve conflicts?
Modeling Constraints
Keys
Keys in ODL
Keys in E/R Diagrams
Single Value Constraints
Referential Integrity Constraints
Weak Entity Sets
Email: alon@cs.washington.edu
Home Page: http://www.cs.washington.edu/homes/alon
Download presentation source