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

3 / 20

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

4 / 20

4. Each Database has its own System Catalog?

5 / 20

5. Which of below are predefined schemas?

choose 3

6 / 20

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

7 / 20

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

choose 2

8 / 20

8. Which of below are predefined schemas?

choose 2

9 / 20

9. What is the purpose of wal writer?

10 / 20

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

11 / 20

11. What is a schema?

12 / 20

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

13 / 20

13. Which fork contains the actual table data?

14 / 20

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

15 / 20

15. What column in system catalogs servers as the Primary Key

16 / 20

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

17 / 20

17. Postgres server spawns a new backend session for each connection?

18 / 20

18. Users should not modify the template0 database

19 / 20

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

20 / 20

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

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

2 / 10

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

Select more than 1 answer below:

3 / 10

3. A phantom read anomaly occurs when?

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

7. What is the default Isolation Level?

8 / 10

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

9 / 10

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

10 / 10

10. Which of the below are valid Isolations Levels?

choose 2

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. The page header is located in the highest address?

2 / 10

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

3 / 10

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

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

6 / 10

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

7 / 10

7. Which 2 items does a Virtual XID consist of?

8 / 10

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

9 / 10

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

10 / 10

10. Page free space can often become fragmented?

Your score is

0%