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 header sizes can be easily displayed using the <choose from answers> extension

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2. In Postgres, tables are often referred to as which of the below?

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3. index row headers like table row headers contain xmin and xmax fields?

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

choose 2

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5. CLOG files are stored in which directory?

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

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

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

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

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

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