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

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

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

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4. CLOG contains how many bits for each transaction?

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

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

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7. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

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

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9. status of a subtransaction is written into CLOG?

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

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