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. Which 2 of the below represent transaction IDs used for row versioning?

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2. A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

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3. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

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4. In Postgres, tables are often referred to as which of the below?

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5. Each page has a layer that usually consists of?

choose 2

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6. Page free space can often become fragmented?

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

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8. CLOG contains how many bits for each transaction?

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

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10. CLOG Pages are never cached in memory?

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