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 template0 database?

2 / 20

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

3 / 20

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

4 / 20

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

5 / 20

5. pg_catalog schema is used to store system catalog tables?

6 / 20

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

7 / 20

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

8 / 20

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

9 / 20

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

10 / 20

10. A Postgres cluster consists of 2 or more physical servers accessing one Postgres Instance?

11 / 20

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

choose 2

12 / 20

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

13 / 20

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

14 / 20

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

15 / 20

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

16 / 20

16. Each Database has its own System Catalog?

17 / 20

17. The default Page size is 2k?

18 / 20

18. Files are logically split into pages?

19 / 20

19. What is a schema?

20 / 20

20. Users should not modify the template0 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 are some of database features we can use to avoid a non repeatable read?

Select more than 1 answer below:

2 / 10

2. Which parameters sets the database default isolation level?

3 / 10

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

4 / 10

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

5 / 10

5. The SQL standard specifies three isolation levels?

6 / 10

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

choose 3

7 / 10

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

8 / 10

8. What is the default Isolation Level?

9 / 10

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

10 / 10

10. non-repeatable 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. If a transaction aborts, all page changes are reverted(rolled back) in place?

2 / 10

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

3 / 10

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

4 / 10

4. CLOG Pages are never cached in memory?

5 / 10

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

6 / 10

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

7 / 10

7. CLOG contains how many bits for each transaction?

8 / 10

8. Information about subtransactions is stored under?

9 / 10

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

10 / 10

10. When a transaction is committed Postgres uses a special <replace with answer> structure?

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