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

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

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4. CLOG Pages are never cached in memory?

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

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

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

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8. indexes do not use row versioning?

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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. UPDATE can be regarded as which 2 separate operations?

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