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 the purpose of autovacuum?

2 / 20

2. What is a schema?

3 / 20

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

4 / 20

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

5 / 20

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

choose 2

6 / 20

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

7 / 20

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

8 / 20

8. What is the purpose of the public schema?

9 / 20

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

choose 3

10 / 20

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

11 / 20

11. What is the name of the directory that contains the files related to the Postgres cluster?

12 / 20

12. System Catalog tables begin with which prefix?

13 / 20

13. Which fork contains the actual table data?

14 / 20

14. Who is the Author of the Postgres 14 Internals book?

15 / 20

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

16 / 20

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

17 / 20

17. What is the purpose of the template0 database?

18 / 20

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

19 / 20

19. What is the name of the system catalog table for relations?

20 / 20

20. Which of below are predefined schemas?

choose 3

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

2 / 10

2. The SQL standard specifies three isolation levels?

3 / 10

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

4 / 10

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

5 / 10

5. What is the default Isolation Level?

6 / 10

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

7 / 10

7. Which parameters sets the database default isolation level?

8 / 10

8. A phantom read anomaly occurs when?

9 / 10

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

10 / 10

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

Select more than 1 answer below:

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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. If a transaction is read only which kind of Transaction ID is it allocated?

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

6. CLOG Pages are never cached in memory?

7 / 10

7. Page free space can often become fragmented?

8 / 10

8. status of a subtransaction is written into CLOG?

9 / 10

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

10 / 10

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

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