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

2 / 20

2. Each Database has its own System Catalog?

3 / 20

3. What is a schema?

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

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

6 / 20

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

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

Choose 2 option

8 / 20

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

9 / 20

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

choose 2

10 / 20

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

11 / 20

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

12 / 20

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

13 / 20

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

14 / 20

14. Users should not modify the template0 database

15 / 20

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

16 / 20

16. Which of below are predefined schemas?

choose 3

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17. How does Postgres know which schema to use if not specified?

18 / 20

18. TOAST tables reside in a seperate schema?

19 / 20

19. What is the purpose of wal writer?

20 / 20

20. What is another name for the postgres process?

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

2 / 10

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

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. non-repeatable read anomaly occurs when?

6 / 10

6. What is the default Isolation Level?

7 / 10

7. Which of the below are valid Isolations Levels?

choose 2

8 / 10

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

9 / 10

9. Snapshot isolation is preferred but increases the number of required locks?

10 / 10

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

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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. When a transaction is committed Postgres uses a special <replace with answer> structure?

2 / 10

2. status of a subtransaction is written into CLOG?

3 / 10

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

4 / 10

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

5 / 10

5. Tuples can also be referred to as columns?

6 / 10

6. Information about subtransactions is stored under?

7 / 10

7. When a row is created, its xmin value is set to the transaction ID of which command?

8 / 10

8. Page free space can often become fragmented?

9 / 10

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

10 / 10

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

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