Postgres Quiz Archive

You have 200 seconds to answer 20 Random questions so think fast!

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Created by Paul Sammy

PostgreSQL 14 Internals Chapter 1

A quiz to test the knowledge of those reading and learning from Postgres 14 Internals book by Egor Rogov, covering topics in Chapter 1.

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1. What is the name of the catalog that stores metadata for all cluster objects?

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2. Which fork is specific for unlogged tables?

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3. If we create a new tablespace which directory will symbolic links be created from?

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4. Postgres uses a thread based process model?

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5. What is the purpose of the postgres database?

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6. What 3 files/forks as a minimum make up a table on disk?

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7. What is the name of the directory that contains the files related to the Postgres cluster?

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8. Which of the below objects can be referred to as relations?

choose 3

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9. What is the purpose of the template0 database?

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10. Tablespaces can be used to segregate data based on performance needs?

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11. A schema can belong to more than one database?

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12. What is the purpose of autovacuum?

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13. The information_schema schema provides information on Postgres release notes?

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14. What column in system catalogs servers as the Primary Key

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15. What is the purpose of the public schema?

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16. What is the name of the system catalog table for relations?

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17. What is another name for the postgres process?

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18. Each Database has its own System Catalog?

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19. A single Postgres Instance can server only one database?

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20. What is the purpose of the visibility map?

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Created by Paul Sammy

PostgreSQL 14 Internals Chapter 2

A quiz to test the knowledge of those reading and learning from Postgres 14 Internals book by Egor Rogov, covering topics in Chapter 2.

1 / 10

1. Based on Snapshot Isolation use of MVCC which of the below are permitted?

choose 3

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2. Which parameters sets the database default isolation level?

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3. The SQL standard specifies three isolation levels?

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4. Snapshot isolation is preferred but increases the number of required locks?

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5. Which of the below would best describe a dirty read?

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6. Which of the below are valid Isolations Levels?

choose 2

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7. non-repeatable read anomaly occurs when?

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8. What are some of database features we can use to avoid a non repeatable read?

Select more than 1 answer below:

9 / 10

9. Which isolation level in theory could mean an application does not have to consider isolation anomalies?

10 / 10

10. A phantom read anomaly occurs when?

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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.

1 / 10

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

2 / 10

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

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

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

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5. Which 2 of the below represent transaction IDs used for row versioning?

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

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

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

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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. Information about subtransactions is stored under?

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