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 can be used to segregate data based on performance needs?

2 / 20

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

3 / 20

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

4 / 20

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

5 / 20

5. What is the purpose of wal writer?

6 / 20

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

7 / 20

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

8 / 20

8. What is the purpose of autovacuum?

9 / 20

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

10 / 20

10. Postgres uses a thread based process model?

11 / 20

11. Each Database has its own System Catalog?

12 / 20

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

choose 2

13 / 20

13. To understand each other, a client and a server must use one and the same interfacing protocol?

14 / 20

14. What is the purpose of the visibility map?

15 / 20

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

16 / 20

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

Choose 2 option

17 / 20

17. What is the purpose of the postgres database?

18 / 20

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

19 / 20

19. Which fork is specific for unlogged tables?

20 / 20

20. Which of below are predefined schemas?

choose 2

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

2 / 10

2. What is the default Isolation Level?

3 / 10

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

4 / 10

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

5 / 10

5. Which parameters sets the database default isolation level?

6 / 10

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

choose 3

7 / 10

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

8 / 10

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

9 / 10

9. Which of the below are valid Isolations Levels?

choose 2

10 / 10

10. A phantom read anomaly occurs when?

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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. indexes do not use row versioning?

2 / 10

2. The page header is located in the highest address?

3 / 10

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

4 / 10

4. Information about subtransactions is stored under?

5 / 10

5. Page free space can often become fragmented?

6 / 10

6. CLOG files are stored in which directory?

7 / 10

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

8 / 10

8. status of a subtransaction is written into CLOG?

9 / 10

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

10 / 10

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

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