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. TOAST tables reside in a seperate schema?

2 / 20

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

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

4 / 20

4. Tablespaces are used to define physical data layout?

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

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

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

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8. Which of below are predefined schemas?

choose 3

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9. Which fork is specific for unlogged tables?

10 / 20

10. What is a schema?

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11. What is the purpose of the postgres database?

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

13 / 20

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

14 / 20

14. What is the default standard size for a fork file?

15 / 20

15. Postgres uses a thread based process model?

16 / 20

16. What command is used to create the Postgres cluster?

17 / 20

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

choose 2

18 / 20

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

Choose 2 option

19 / 20

19. Users should not modify the template0 database

20 / 20

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

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

choose 3

2 / 10

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

3 / 10

3. What is the acronym used for the attributes that ensure Data consistency, integrity and durability?

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

8. Which of the below are valid Isolations Levels?

choose 2

9 / 10

9. non-repeatable read anomaly occurs when?

10 / 10

10. Which parameters sets the database 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. The page Special Space is located at the start of the page with highest address

2 / 10

2. CLOG files are stored in which directory?

3 / 10

3. a transaction containing a savepoint is will still be considered as only a single transaction?

4 / 10

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

5 / 10

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

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

7 / 10

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

choose 2

8 / 10

8. CLOG Pages are never cached in memory?

9 / 10

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

10 / 10

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

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