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 is the purpose of the visibility map?

2 / 20

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

3 / 20

3. What is a schema?

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4. Which of below are predefined schemas?

choose 2

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

6 / 20

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

7 / 20

7. What is the purpose of wal writer?

8 / 20

8. What is the purpose of autovacuum?

9 / 20

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

10 / 20

10. Files are logically split into pages?

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

12 / 20

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

13 / 20

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

14 / 20

14. What is the purpose of the postgres database?

15 / 20

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

16 / 20

16. What is the point of the pg_global tablespace?

17 / 20

17. Which of below are predefined schemas?

choose 3

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

19 / 20

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

20 / 20

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

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

3 / 10

3. A phantom read anomaly occurs when?

4 / 10

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

7 / 10

7. The SQL standard specifies three isolation levels?

8 / 10

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

choose 3

9 / 10

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

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

2 / 10

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

3 / 10

3. CLOG contains how many bits for each transaction?

4 / 10

4. UPDATE can be regarded as which 2 separate operations?

5 / 10

5. CLOG files are stored in which directory?

6 / 10

6. Information about subtransactions is stored under?

7 / 10

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

8 / 10

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

9 / 10

9. psql provides a special mode that allows you to continue a transaction after a failure?

10 / 10

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

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