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 column in system catalogs servers as the Primary Key

2 / 20

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

choose 2

3 / 20

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

4 / 20

4. What is another name for the postgres process?

5 / 20

5. Users should not modify the template0 database

6 / 20

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

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

8 / 20

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

9 / 20

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

10 / 20

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

11 / 20

11. Which 3 databases exist directly after cluster initialization?

choose 3 options

12 / 20

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

13 / 20

13. What is the purpose of wal writer?

14 / 20

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

15 / 20

15. What is the purpose of the visibility map?

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16. What is the purpose of the postgres database?

17 / 20

17. What is the point of the pg_global tablespace?

18 / 20

18. The default Page size is 2k?

19 / 20

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

20 / 20

20. What is the purpose of the public schema?

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

3 / 10

3. Which parameters sets the database default isolation level?

4 / 10

4. The SQL standard specifies three isolation levels?

5 / 10

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

6 / 10

6. A phantom read anomaly occurs when?

7 / 10

7. What is the default Isolation Level?

8 / 10

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

choose 3

9 / 10

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

10 / 10

10. Which of the below are valid Isolations Levels?

choose 2

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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 values also support multi versioning with several versions of an index value existing at any point in time?

2 / 10

2. Each page has a layer that usually consists of?

choose 2

3 / 10

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

4 / 10

4. Tuples can also be referred to as columns?

5 / 10

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

6 / 10

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

7 / 10

7. CLOG Pages are never cached in memory?

8 / 10

8. Page free space can often become fragmented?

9 / 10

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

10 / 10

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

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