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. CLOG contains how many bits for each transaction?

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

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3. Indexes values also support multi versioning with several versions of an index value existing at any point in time?

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

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

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

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7. What does an Item Pointer contain?

choose 3

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

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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. Each page has a layer that usually consists of?

choose 2

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