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 can be used to segregate data based on performance needs?

2 / 20

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

Choose 2 option

3 / 20

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

4 / 20

4. Which fork is specific for unlogged tables?

5 / 20

5. What is the purpose of the template1 database?

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 the purpose of the public schema?

8 / 20

8. Postgres by default has built in connection pooling abilities?

9 / 20

9. How does Postgres know which schema to use if not specified?

10 / 20

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

11 / 20

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

12 / 20

12. TOAST tables reside in a seperate schema?

13 / 20

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

14 / 20

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

15 / 20

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

16 / 20

16. Which 3 databases exist directly after cluster initialization?

choose 3 options

17 / 20

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

18 / 20

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

19 / 20

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

20 / 20

20. What is another name for the postgres process?

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

2 / 10

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

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

choose 3

6 / 10

6. What is the default Isolation Level?

7 / 10

7. The SQL standard specifies three isolation levels?

8 / 10

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

9 / 10

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

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

2 / 10

2. status of a subtransaction is written into CLOG?

3 / 10

3. psql provides a special mode that allows you to continue a transaction after a failure?

4 / 10

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

5 / 10

5. If a transaction aborts, all page changes are reverted(rolled back) in place?

6 / 10

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

7 / 10

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

8 / 10

8. indexes do not use row versioning?

9 / 10

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

10 / 10

10. What does an Item Pointer contain?

choose 3

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