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. What command is used to create the Postgres cluster?

2 / 20

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

3 / 20

3. Files are logically split into pages?

4 / 20

4. What is a schema?

5 / 20

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

6 / 20

6. What is the purpose of the visibility map?

7 / 20

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

8 / 20

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

9 / 20

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

10 / 20

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

11 / 20

11. A schema can belong to more than one database?

12 / 20

12. What is the purpose of wal writer?

13 / 20

13. Each Database has its own System Catalog?

14 / 20

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

15 / 20

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

16 / 20

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

17 / 20

17. Which fork contains the actual table data?

18 / 20

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

choose 3

19 / 20

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

20 / 20

20. What is the process first launched at server start?

Your score is

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. Which of the below are valid Isolations Levels?

choose 2

2 / 10

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

choose 3

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

6. The SQL standard specifies three isolation levels?

7 / 10

7. What is the default Isolation Level?

8 / 10

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

9 / 10

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

10 / 10

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

Your score is

0%

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 2 of the below represent transaction IDs used for row versioning?

2 / 10

2. Information about subtransactions is stored under?

3 / 10

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

4 / 10

4. status of a subtransaction is written into CLOG?

5 / 10

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

6 / 10

6. What does an Item Pointer contain?

choose 3

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

Your score is

0%