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. To understand each other, a client and a server must use one and the same interfacing protocol?

2 / 20

2. What is the purpose of autovacuum?

3 / 20

3. What command is used to create the Postgres cluster?

4 / 20

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

5 / 20

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

choose 3

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6. What is the purpose of the visibility map?

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

8 / 20

8. Each Database has its own System Catalog?

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

10 / 20

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

11 / 20

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

12 / 20

12. What is another name for the postgres process?

13 / 20

13. How many files or forks on disk will a 10Mb table with no index have?

14 / 20

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

15 / 20

15. Tablespaces are used to define physical data layout?

16 / 20

16. What is the purpose of the template0 database?

17 / 20

17. Which fork is specific for unlogged tables?

18 / 20

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

19 / 20

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

20 / 20

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

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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 statements will start a transaction as Read Repeatable?

2 / 10

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

3 / 10

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

4 / 10

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

choose 3

5 / 10

5. Which of the below are valid Isolations Levels?

choose 2

6 / 10

6. non-repeatable read anomaly occurs when?

7 / 10

7. What is the default Isolation Level?

8 / 10

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

9 / 10

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

10 / 10

10. The SQL standard specifies three isolation levels?

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. Page free space can often become fragmented?

2 / 10

2. CLOG files are stored in which directory?

3 / 10

3. Page header sizes can be easily displayed using the <choose from answers> extension

4 / 10

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

5 / 10

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

6 / 10

6. Tuples can also be referred to as columns?

7 / 10

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

8 / 10

8. Which function can we use to find the current transaction ID?

9 / 10

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

10 / 10

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

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