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

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2. psql provides a special mode that allows you to continue a transaction after a failure?

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

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

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5. CLOG Pages are never cached in memory?

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6. Page free space can often become fragmented?

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7. Postgres table physical data files are always cross compatible across platforms?

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8. Tuples can also be referred to as columns?

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9. The page header stores checksum and the sizes of the other parts of the page?

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10. Which of the below are true about a Pages Item Pointer?

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