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. A single Postgres Instance can server only one database?

2 / 20

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

3 / 20

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

choose 2

4 / 20

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

5 / 20

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

choose 3

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6. Tablespaces are used to define physical data layout?

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7. What is the point of the pg_global tablespace?

8 / 20

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

9 / 20

9. What is a schema?

10 / 20

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

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

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

13 / 20

13. Which 3 databases exist directly after cluster initialization?

choose 3 options

14 / 20

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

15 / 20

15. The pg_default tablespace should never be used to create user tables?

16 / 20

16. Files are logically split into pages?

17 / 20

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

18 / 20

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

19 / 20

19. What is the purpose of the postgres database?

20 / 20

20. What is the purpose of the template0 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. Based on Snapshot Isolation use of MVCC which of the below are permitted?

choose 3

3 / 10

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

4 / 10

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

5 / 10

5. Which parameters sets the database default isolation level?

6 / 10

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

7 / 10

7. The SQL standard specifies three isolation levels?

8 / 10

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

9 / 10

9. Which of the below are valid Isolations Levels?

choose 2

10 / 10

10. What is the default Isolation Level?

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

2 / 10

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

3 / 10

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

4 / 10

4. CLOG Pages are never cached in memory?

5 / 10

5. Tuples can also be referred to as columns?

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. status of a subtransaction is written into CLOG?

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