PostgreSQL Fundamentals

To write WAL to the disk and ensure data consistency (correct)

To create a snapshot of the current transaction

To mark pages as clean and visible for all transactions

To clean up rows and free up space

To optimize query performance using helper flags

To keep track of dirty pages and trigger checkpoints

To manage transactions and ensure isolation

To determine which rows are visible to a transaction (correct)

To implement transaction isolation using snapshots

To ensure data consistency and durability in the event of a crash (correct)

To manage the file layout and organization of pages

To optimize query performance using lateral joins and window functions

<p>To clean up rows and free up space</p> Signup and view all the answers

<p>To optimize query performance by avoiding unnecessary checks</p> Signup and view all the answers