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. Which of below are predefined schemas?

choose 2

2 / 20

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

3 / 20

3. What is another name for the postgres process?

4 / 20

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

5 / 20

5. Which of below are predefined schemas?

choose 3

6 / 20

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

7 / 20

7. The default Page size is 2k?

8 / 20

8. System Catalog tables begin with which prefix?

9 / 20

9. What is the point of the pg_global tablespace?

10 / 20

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

11 / 20

11. pg_catalog schema is used to store system catalog tables?

12 / 20

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

13 / 20

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

14 / 20

14. What is a schema?

15 / 20

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

16 / 20

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

Choose 2 option

17 / 20

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

18 / 20

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

choose 2

19 / 20

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

20 / 20

20. How many files or forks on disk will a 10Mb table with no index have?

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

2 / 10

2. What is the default Isolation Level?

3 / 10

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

choose 3

4 / 10

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

Select more than 1 answer below:

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

8. non-repeatable 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. Which isolation level in theory could mean an application does not have to consider isolation anomalies?

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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. Information about subtransactions is stored under?

2 / 10

2. In Postgres, tables are often referred to as which of the below?

3 / 10

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

4 / 10

4. Which 2 of the below represent transaction IDs used for row versioning?

5 / 10

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

6 / 10

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

7 / 10

7. Page free space can often become fragmented?

8 / 10

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

9 / 10

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

10 / 10

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

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