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. Page free space can often become fragmented?

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

choose 2

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

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

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

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

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7. CLOG Pages are never cached in memory?

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8. If a transaction is read only which kind of Transaction ID is it allocated?

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

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

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