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

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

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

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4. Which of the below are true about a Pages Item Pointer?

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5. CLOG contains how many bits for each transaction?

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

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7. status of a subtransaction is written into CLOG?

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8. The page header stores checksum and the sizes of the other parts of the page?

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9. at any one time Postgres can have several versions of a row?

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

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