03 ER and Relational Data Models
Lesson: https://webeep.polimi.it/mod/resource/view.php?id=30596
Exercises: https://webeep.polimi.it/mod/resource/view.php?id=32921
01 ER
Foundations An entity–relationship model (or ER model) describes interrelated things of interest ...
02 Relational Model
Keys Superkey: a set of attributes K is a superkey for a relation r if r does not contain two dis...
03 ER Exercises
Exercise 1 Design an ER Model for a car rental system that manages the customers, the cars and th...