PostgreSQL 14 Internals Quiz

Created by Paul Sammy

PostgreSQL 14 Internals Chapter 3

A quiz to test the knowledge of those reading and learning from Postgres 14 Internals book by Egor Rogov, covering topics in Chapter 3.

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1. Rows of TOAST tables are handled in such a way that they are never update?

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2. index row headers like table row headers contain xmin and xmax fields?

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3. a transaction containing a savepoint is will still be considered as only a single transaction?

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4. If a transaction aborts, all page changes are reverted(rolled back) in place?

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5. When a transaction is committed Postgres uses a special <replace with answer> structure?

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6. CLOG contains how many bits for each transaction?

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7. UPDATE can be regarded as which 2 separate operations?

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8. CLOG Pages are never cached in memory?

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9. Tuples can also be referred to as columns?

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10. virtual IDs exist only in PGDATA/pg_vxid when not cached?

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