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. UPDATE can be regarded as which 2 separate operations?

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

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4. Each page has a layer that usually consists of?

choose 2

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

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

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7. status of a subtransaction is written into CLOG?

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8. psql provides a special mode that allows you to continue a transaction after a failure?

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9. CLOG files are stored in which directory?

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10. In Postgres, tables are often referred to as which of the below?

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