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 is a schema?

2 / 20

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

3 / 20

3. Tablespaces are used to define physical data layout?

4 / 20

4. What is the purpose of the postgres database?

5 / 20

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

Choose 2 option

6 / 20

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

7 / 20

7. What is the purpose of the visibility map?

8 / 20

8. Which fork is specific for unlogged tables?

9 / 20

9. TOAST tables reside in a seperate schema?

10 / 20

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

11 / 20

11. What is the purpose of the template1 database?

12 / 20

12. The default Page size is 2k?

13 / 20

13. What is the purpose of the public schema?

14 / 20

14. What is another name for the postgres process?

15 / 20

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

choose 2

16 / 20

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

choose 3

17 / 20

17. Which 3 databases exist directly after cluster initialization?

choose 3 options

18 / 20

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

19 / 20

19. What is the point of the pg_global tablespace?

20 / 20

20. Each Database has its own System Catalog?

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

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

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

Select more than 1 answer below:

7 / 10

7. Which of the below are valid Isolations Levels?

choose 2

8 / 10

8. Which parameters sets the database default isolation level?

9 / 10

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

10 / 10

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

choose 3

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

2 / 10

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

3 / 10

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

4 / 10

4. CLOG Pages are never cached in memory?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

Your score is

0%