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

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

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3. CLOG contains how many bits for each transaction?

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

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5. Page free space can often become fragmented?

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

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7. The page header is located in the highest address?

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

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

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

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