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. Indexes values also support multi versioning with several versions of an index value existing at any point in time?

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2. CLOG Pages are never cached in memory?

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

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

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

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7. index row headers like table row headers contain xmin and xmax fields?

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

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

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

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