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. Tuples can also be referred to as columns?

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3. indexes do not use row versioning?

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

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

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

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7. Which 2 items does a Virtual XID consist of?

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

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

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10. CLOG contains how many bits for each transaction?

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