Ch2 another design
Entities in Drupal 8 - Drupal Tech Talk - Bart Feenstra
Entity API in Drupal 8 (Drupal Tech Talk October 2014)
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.
International Computer Institute, Izmir, Turkey E-R Model Asst.Prof.Dr.İlker Kocabaş UBİ502 at ikocabas/teaching/ubi502/index.html.
Chapter 2: Entity-Relationship Model
