Sep 11: Enhanced ER Model (EER)
Learning Objectives
After today's class, you should be able to:
- Explain the following concepts: weak entity, ternary relationship, specialization.
- Answer questions that require interpreting EER diagrams.
Lesson Outline¶
Lecture Slides: EER Models
[15 min]Weak entities, ternary and recursive relationships[15 min]Group Activity: Abstract ER Model, Part 3- Part 1 & 2 solution in Chen style
- Part 1 & 2 solution in enhanced crow's foot style
[15 min](EER) Inheritance and specialization hierarchies[20 min]Group Activity: Reading EER Diagrams
Group Project [10 min]
- Project 1 (due Sep 15) specification
- Continue working on proposal