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. A schema can belong to more than one database?

2 / 20

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

Choose 2 option

3 / 20

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

4 / 20

4. What is the purpose of the visibility map?

5 / 20

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

6 / 20

6. TOAST tables reside in a seperate schema?

7 / 20

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

8 / 20

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

9 / 20

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

10 / 20

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

choose 2

11 / 20

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

12 / 20

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

13 / 20

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

14 / 20

14. What is the purpose of the public schema?

15 / 20

15. Which of below are predefined schemas?

choose 2

16 / 20

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

17 / 20

17. Each Database has its own System Catalog?

18 / 20

18. Postgres by default has built in connection pooling abilities?

19 / 20

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

20 / 20

20. What is the purpose of the template0 database?

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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 are valid Isolations Levels?

choose 2

2 / 10

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

3 / 10

3. Which parameters sets the database default isolation level?

4 / 10

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

5 / 10

5. A phantom read anomaly occurs when?

6 / 10

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

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. What is the default Isolation Level?

10 / 10

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

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. Tuples can also be referred to as columns?

2 / 10

2. CLOG files are stored in which directory?

3 / 10

3. indexes do not use row versioning?

4 / 10

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

5 / 10

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

6 / 10

6. What does an Item Pointer contain?

choose 3

7 / 10

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

8 / 10

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

9 / 10

9. CLOG Pages are never cached in memory?

10 / 10

10. virtual IDs exist only in PGDATA/pg_vxid when not cached?

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