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. The page Special Space is located at the start of the page with highest address

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

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3. Tuples can also be referred to as columns?

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

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

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

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7. at any one time Postgres can have several versions of a row?

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8. Page free space can often become fragmented?

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9. When a row is created, its xmin value is set to the transaction ID of which command?

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

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