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. Tablespaces are used to define physical data layout?

2 / 20

2. What is the purpose of the visibility map?

3 / 20

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

4 / 20

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

5 / 20

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

6 / 20

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

7 / 20

7. What is the purpose of wal writer?

8 / 20

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

9 / 20

9. The pg_default tablespace should never be used to create user tables?

10 / 20

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

11 / 20

11. Which of below are predefined schemas?

choose 2

12 / 20

12. What is the purpose of the template0 database?

13 / 20

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

14 / 20

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

15 / 20

15. What is the purpose of the public schema?

16 / 20

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

17 / 20

17. System Catalog tables begin with which prefix?

18 / 20

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

Choose 2 option

19 / 20

19. Which of below are predefined schemas?

choose 3

20 / 20

20. Which 3 databases exist directly after cluster initialization?

choose 3 options

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0%

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 default Isolation Level?

2 / 10

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

3 / 10

3. The SQL standard specifies three isolation levels?

4 / 10

4. non-repeatable read anomaly occurs when?

5 / 10

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

6 / 10

6. Which parameters sets the database default isolation level?

7 / 10

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

8 / 10

8. Which of the below are valid Isolations Levels?

choose 2

9 / 10

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

10 / 10

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

choose 3

Your score is

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

2 / 10

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

choose 2

3 / 10

3. Information about subtransactions is stored under?

4 / 10

4. A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

9. The page Special Space is located at the start of the page with highest address

10 / 10

10. CLOG files are stored in which directory?

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