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

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

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3. CLOG Pages are never cached in memory?

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4. indexes do not use row versioning?

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5. Information about subtransactions is stored under?

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

choose 2

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

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8. What does an Item Pointer contain?

choose 3

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

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10. Which function can we use to find the current transaction ID?

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