Postgres Quiz Archive

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

You will need to score 80% or over to pass!

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. What is the purpose of the template1 database?

2 / 20

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

3 / 20

3. Which of below are predefined schemas?

choose 3

4 / 20

4. Which of below are predefined schemas?

choose 2

5 / 20

5. Which fork is specific for unlogged tables?

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6. Some System Catalog tables are common to all databases in the cluster?

7 / 20

7. Users should not modify the template0 database

8 / 20

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

9 / 20

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

10 / 20

10. What is the purpose of the template0 database?

11 / 20

11. What is the purpose of the public schema?

12 / 20

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

13 / 20

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

14 / 20

14. To be able to restore data consistency, Postgres maintains

15 / 20

15. What is another name for the postgres process?

16 / 20

16. What is the purpose of the postgres database?

17 / 20

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

18 / 20

18. What is the name of the 2 default tablespaces created after initialization?

choose 2

19 / 20

19. What is the name of the mechanism used to store a row bigger than a page size?

20 / 20

20. Postgres uses a thread based process model?

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

2 / 10

2. Which of the below are valid Isolations Levels?

choose 2

3 / 10

3. The SQL standard specifies three isolation levels?

4 / 10

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

5 / 10

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

choose 3

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6. What is the default Isolation Level?

7 / 10

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

8 / 10

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 parameters sets the database default isolation level?

10 / 10

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

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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. CLOG files are stored in which directory?

2 / 10

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

3 / 10

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

4 / 10

4. CLOG contains how many bits for each transaction?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

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