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. Each Database has its own System Catalog?

2 / 20

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

3 / 20

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

4 / 20

4. Users should not modify the template0 database

5 / 20

5. What is the purpose of the visibility map?

6 / 20

6. Which 3 databases exist directly after cluster initialization?

choose 3 options

7 / 20

7. Which fork is specific for unlogged tables?

8 / 20

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

9 / 20

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

10 / 20

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

11 / 20

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

12 / 20

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

13 / 20

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

14 / 20

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

15 / 20

15. What is the purpose of autovacuum?

16 / 20

16. Postgres uses a thread based process model?

17 / 20

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

18 / 20

18. What command is used to create the Postgres cluster?

19 / 20

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

20 / 20

20. The default Page size is 2k?

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. non-repeatable read anomaly occurs when?

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

6. What is the default Isolation Level?

7 / 10

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

8 / 10

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

9 / 10

9. Which of the below are valid Isolations Levels?

choose 2

10 / 10

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

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. When a row is created, its xmin value is set to the transaction ID of which command?

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

6. status of a subtransaction is written into CLOG?

7 / 10

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

8 / 10

8. Page free space can often become fragmented?

9 / 10

9. a transaction containing a savepoint is will still be considered as only a single transaction?

10 / 10

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

Your score is

0%