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

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

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3. Page free space can often become fragmented?

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4. a transaction containing a savepoint is will still be considered as only a single transaction?

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

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6. status of a subtransaction is written into CLOG?

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

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8. indexes do not use row versioning?

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9. Information about subtransactions is stored under?

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

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