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. CLOG files are stored in which directory?

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

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3. Information about subtransactions is stored under?

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

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5. psql provides a special mode that allows you to continue a transaction after a failure?

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6. CLOG contains how many bits for each transaction?

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

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

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

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10. What does an Item Pointer contain?

choose 3

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