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. Each Database has its own System Catalog?

2 / 20

2. What is the purpose of autovacuum?

3 / 20

3. Which fork is specific for unlogged tables?

4 / 20

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

choose 3

5 / 20

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

6 / 20

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

Choose 2 option

7 / 20

7. Tablespaces are used to define physical data layout?

8 / 20

8. The default Page size is 2k?

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

10 / 20

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

11 / 20

11. What is another name for the postgres process?

12 / 20

12. Which fork contains the actual table data?

13 / 20

13. A single Postgres Instance can server only one database?

14 / 20

14. Tablespaces can be used to segregate data based on performance needs?

15 / 20

15. Each tablespaces can only be assigned for use by one database

16 / 20

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

choose 2

17 / 20

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

18 / 20

18. Which 3 databases exist directly after cluster initialization?

choose 3 options

19 / 20

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

20 / 20

20. What is the purpose of the template1 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. The more locks a transaction acquires, the better it is isolated from other transactions?

2 / 10

2. What is the default Isolation Level?

3 / 10

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

4 / 10

4. Which parameters sets the database default isolation level?

5 / 10

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

Select more than 1 answer below:

6 / 10

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

7 / 10

7. The SQL standard specifies three isolation levels?

8 / 10

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

9 / 10

9. Which of the below are valid Isolations Levels?

choose 2

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

2 / 10

2. CLOG contains how many bits for each transaction?

3 / 10

3. Rows of TOAST tables are handled in such a way that they are never update?

4 / 10

4. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

5 / 10

5. Which of the below are true about a Pages Item Pointer?

6 / 10

6. status of a subtransaction is written into CLOG?

7 / 10

7. The page header stores checksum and the sizes of the other parts of the page?

8 / 10

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

9 / 10

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

choose 2

10 / 10

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

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