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. status of a subtransaction is written into CLOG?

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

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3. If a transaction aborts, all page changes are reverted(rolled back) in place?

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4. CLOG contains how many bits for each transaction?

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5. Page free space can often become fragmented?

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

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

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

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

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

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