DBS: 3.8. Composite Search Keys 

This is the Database Systems II
Instructor: Ouldooz Baghban Karimi (ouldooz.com)
Textbook: Database Management Systems
Raghu Ramakrishnan, Johannes Gehrke
pages.cs.wisc.e...
Database System Concepts
Avi Silberschatz, Henry F. Korth, S. Sudarshan
www.db-book.com/