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

2 / 20

2. It is the postmasters job to listener for incoming connections?

3 / 20

3. What is the purpose of the postgres database?

4 / 20

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

5 / 20

5. What is another name for the postgres process?

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6. Which fork keeps track of available space within pages?

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7. System Catalog tables begin with which prefix?

8 / 20

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

9 / 20

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

choose 2

10 / 20

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

11 / 20

11. What is the purpose of the public schema?

12 / 20

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

13 / 20

13. When PostgreSQL is running what can it be referred to as?

Choose 2 option

14 / 20

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

15 / 20

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

choose 3

16 / 20

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

17 / 20

17. How many rows in a page does Postgres aim to have before considering TOAST?

18 / 20

18. Which of below are predefined schemas?

choose 2

19 / 20

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

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. non-repeatable read anomaly occurs when?

2 / 10

2. which of the below statements will start a transaction as Read Repeatable?

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. Which of the below are valid Isolations Levels?

choose 2

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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. What does an Item Pointer contain?

choose 3

2 / 10

2. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

3 / 10

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

choose 2

4 / 10

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

5 / 10

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

6 / 10

6. CLOG files are stored in which directory?

7 / 10

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

8 / 10

8. Page free space can often become fragmented?

9 / 10

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

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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