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. Files are logically split into pages?

2 / 20

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

3 / 20

3. Which 3 databases exist directly after cluster initialization?

choose 3 options

4 / 20

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

5 / 20

5. Postgres uses a thread based process model?

6 / 20

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

7 / 20

7. What is a schema?

8 / 20

8. What is the purpose of autovacuum?

9 / 20

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

10 / 20

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

choose 2

11 / 20

11. Which of below are predefined schemas?

choose 2

12 / 20

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

13 / 20

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

14 / 20

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

15 / 20

15. System Catalog tables begin with which prefix?

16 / 20

16. Which of below are predefined schemas?

choose 3

17 / 20

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

18 / 20

18. What is the purpose of the template1 database?

19 / 20

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

choose 3

20 / 20

20. What is the purpose of wal writer?

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

2 / 10

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

3 / 10

3. What is the default Isolation Level?

4 / 10

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

choose 3

5 / 10

5. What are some of database features we can use to avoid a non repeatable read?

Select more than 1 answer below:

6 / 10

6. Snapshot isolation is preferred but increases the number of required locks?

7 / 10

7. Which of the below are valid Isolations Levels?

choose 2

8 / 10

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

9 / 10

9. A phantom read anomaly occurs when?

10 / 10

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

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

2 / 10

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

3 / 10

3. Which of the below are true about a Pages Item Pointer?

4 / 10

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

5 / 10

5. status of a subtransaction is written into CLOG?

6 / 10

6. CLOG files are stored in which directory?

7 / 10

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

8 / 10

8. CLOG Pages are never cached in memory?

9 / 10

9. CLOG contains how many bits for each transaction?

10 / 10

10. indexes do not use row versioning?

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