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.

1 / 20

1. TOAST tables reside in a seperate schema?

2 / 20

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

3 / 20

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

choose 3

4 / 20

4. Which fork contains the actual table data?

5 / 20

5. Which fork is specific for unlogged tables?

6 / 20

6. Postgres uses a thread based process model?

7 / 20

7. What is the purpose of autovacuum?

8 / 20

8. System Catalog tables begin with which prefix?

9 / 20

9. What is the default standard size for a fork file?

10 / 20

10. What is the point of the pg_global tablespace?

11 / 20

11. Who is the Author of the Postgres 14 Internals book?

12 / 20

12. Users should not modify the template0 database

13 / 20

13. Which of below are predefined schemas?

choose 2

14 / 20

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

15 / 20

15. Postgres server spawns a new backend session for each connection?

16 / 20

16. Files are logically split into pages?

17 / 20

17. What is the purpose of wal writer?

18 / 20

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

19 / 20

19. What is a schema?

20 / 20

20. Each tablespaces can only be assigned for use by one database

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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. What is the acronym used for the attributes that ensure Data consistency, integrity and durability?

2 / 10

2. Lost updates are forbidden by the standard at all isolation levels?

3 / 10

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

4 / 10

4. The more locks a transaction acquires, the better it is isolated from other transactions?

5 / 10

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

Select more than 1 answer below:

6 / 10

6. At any moment the database system can contain several versions of one and the same row?

7 / 10

7. The SQL standard specifies three isolation levels?

8 / 10

8. Data Consistency is best handled at the application layer rather than at the database layer?

9 / 10

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

10 / 10

10. What is the default Isolation Level?

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

2 / 10

2. What does an Item Pointer contain?

choose 3

3 / 10

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

4 / 10

4. Information about subtransactions is stored under?

5 / 10

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

6 / 10

6. indexes do not use row versioning?

7 / 10

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

8 / 10

8. Page free space can often become fragmented?

9 / 10

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

10 / 10

10. The page header is located in the highest address?

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