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

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

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

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

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

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

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7. The page Special Space is located at the start of the page with highest address

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8. CLOG contains how many bits for each transaction?

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9. Rows of TOAST tables are handled in such a way that they are never update?

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10. CLOG Pages are never cached in memory?

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