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

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

choose 2

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3. status of a subtransaction is written into CLOG?

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

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

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6. Tuples can also be referred to as columns?

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

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

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