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

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2. CLOG files are stored in which directory?

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

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

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

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6. Which function can we use to find the current transaction ID?

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7. CLOG contains how many bits for each transaction?

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

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

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

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