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 function can we use to find the current transaction ID?

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2. Page free space can often become fragmented?

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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. Tuples can also be referred to as columns?

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

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6. CLOG files are stored in which directory?

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7. CLOG contains how many bits for each transaction?

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

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9. When a transaction is committed Postgres uses a special <replace with answer> structure?

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

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