THE ENTITY- RELATIONSHIP (ER) MODEL CHAPTER 7 (6/E) CHAPTER 3 (5/E)
Ch2 another design
Slide 6 er strong & weak entity
L7 er2
er model
2. Entity-Relationship Model
©Silberschatz, Korth and Sudarshan2.1Database System Concepts Weak Entity Sets An entity set that does not have a primary key is referred to as a weak.
Some slides adapted from A. Silberschatz et al. Database System Concepts, 5th Ed. Midterm Review Database Management Systems I Alex Coman, Winter 2006.
Chapter 2: Entity-Relationship Model
the Entity-Relationship (ER) Model
