Database Systems MCQs – Certification Test 157
MCQ 157: The notion of a key for a relation schema, applies directly to:
The App: Database System Online Quiz Questions and Answers Trivia App to Study Database System Online Quiz Questions and Answers Notes, DataBase Management System (MCS) Trivia App, and C++ Trivia App for database analytics learning.
The "Database System Online Quiz Questions and Answers Learning" App: Free DataBase Management System (MCS) Learning App Download (iOS & Android) to master database systems. Download Play Store & App Store Learning Apps with all functionalities to improve backend databases.