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

2 / 20

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

3 / 20

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

4 / 20

4. Which of below are predefined schemas?

choose 3

5 / 20

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

Choose 2 option

6 / 20

6. What is the purpose of the public schema?

7 / 20

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

8 / 20

8. Which fork contains the actual table data?

9 / 20

9. Each Database has its own System Catalog?

10 / 20

10. Which fork is specific for unlogged tables?

11 / 20

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

12 / 20

12. TOAST tables reside in a seperate schema?

13 / 20

13. What is another name for the postgres process?

14 / 20

14. It is the postmasters job to listener for incoming connections?

15 / 20

15. Which of below are predefined schemas?

choose 2

16 / 20

16. The information_schema schema provides information on Postgres release notes?

17 / 20

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

18 / 20

18. Users should not modify the template0 database

19 / 20

19. A schema can belong to more than one database?

20 / 20

20. System Catalog tables begin with which prefix?

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

choose 3

2 / 10

2. Which of the below are valid Isolations Levels?

choose 2

3 / 10

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

4 / 10

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

5 / 10

5. Which parameters sets the database default isolation level?

6 / 10

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

7 / 10

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

8 / 10

8. A phantom read anomaly occurs when?

9 / 10

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

10 / 10

10. The SQL standard specifies three isolation levels?

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. status of a subtransaction is written into CLOG?

2 / 10

2. Information about subtransactions is stored under?

3 / 10

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

4 / 10

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

5 / 10

5. indexes do not use row versioning?

6 / 10

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

7 / 10

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

8 / 10

8. A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

9 / 10

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

10 / 10

10. What does an Item Pointer contain?

choose 3

Your score is

0%