Storage Internals: Pages Quiz Home › PostgreSQL DBA › Storage Internals: Pages 📦 Postgres Database Administration – Storage Internals: Pages 20 questions · 15 min timer · Explanations included · Free 1. How does PostgreSQL handle tuple visibility to ensure data consistency? Through Multi-Version Concurrency Control (MVCC). By using a global lock on the database during transactions. By maintaining a separate visibility map for each table. By using a timestamp-based locking mechanism. None Show Hint PostgreSQL uses Multi-Version Concurrency Control (MVCC) to handle tuple visibility, allowing multiple transactions to occur simultaneously without locking the entire database. This ensures data consistency and isolation. 2. What is the impact of not regularly analyzing a PostgreSQL database? Increased risk of data corruption. Automatic deletion of old tuples. Loss of database connectivity. Decreased query performance due to outdated statistics. None Show Hint Not regularly analyzing a PostgreSQL database can lead to outdated statistics, which can negatively impact query performance. The query planner relies on accurate statistics to generate efficient execution plans. Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Click Submit to see your final score! Previous Start Quiz Next Time's up
