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 are used to define physical data layout?

2 / 20

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

3 / 20

3. Tablespaces can be used to segregate data based on performance needs?

4 / 20

4. What is the purpose of the public schema?

5 / 20

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

6 / 20

6. Which fork is specific for unlogged tables?

7 / 20

7. To be able to restore data consistency, Postgres maintains

8 / 20

8. Each Database has its own System Catalog?

9 / 20

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

choose 2

10 / 20

10. System Catalog tables begin with which prefix?

11 / 20

11. Postgres uses a thread based process model?

12 / 20

12. What is a schema?

13 / 20

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

14 / 20

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

15 / 20

15. Files are logically split into pages?

16 / 20

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

17 / 20

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

18 / 20

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

19 / 20

19. Which of below are predefined schemas?

choose 2

20 / 20

20. What is the purpose of autovacuum?

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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. A phantom read anomaly occurs when?

2 / 10

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

3 / 10

3. What is the default Isolation Level?

4 / 10

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

Select more than 1 answer below:

5 / 10

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

6 / 10

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

7 / 10

7. The SQL standard specifies three isolation levels?

8 / 10

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

9 / 10

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

10 / 10

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

Your score is

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

2 / 10

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

3 / 10

3. When a transaction is committed Postgres uses a special <replace with answer> structure?

4 / 10

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

5 / 10

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

6 / 10

6. What does an Item Pointer contain?

choose 3

7 / 10

7. indexes do not use row versioning?

8 / 10

8. Page free space can often become fragmented?

9 / 10

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

10 / 10

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

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