Postgres Quiz Archive

You have 200 seconds to answer 20 Random questions so think fast!

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

2 / 20

2. What is a schema?

3 / 20

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

4 / 20

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

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5. What is the purpose of the template1 database?

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6. What is the purpose of the postgres database?

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

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8. Postgres by default has built in connection pooling abilities?

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

10 / 20

10. Which of below are predefined schemas?

choose 3

11 / 20

11. TOAST tables reside in a seperate schema?

12 / 20

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

choose 2

13 / 20

13. What is the purpose of the template0 database?

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14. Which 3 databases exist directly after cluster initialization?

choose 3 options

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15. What is the purpose of the public schema?

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

17 / 20

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

18 / 20

18. Postgres uses a thread based process model?

19 / 20

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

20 / 20

20. Files are logically split into pages?

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

2 / 10

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

3 / 10

3. Which of the below are valid Isolations Levels?

choose 2

4 / 10

4. The SQL standard specifies three isolation levels?

5 / 10

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

6 / 10

6. Which parameters sets the database default isolation level?

7 / 10

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

8 / 10

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

9 / 10

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

Select more than 1 answer below:

10 / 10

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

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

2 / 10

2. What does an Item Pointer contain?

choose 3

3 / 10

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

4 / 10

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

5 / 10

5. Indexes values also support multi versioning with several versions of an index value existing at any point in time?

6 / 10

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

7 / 10

7. CLOG files are stored in which directory?

8 / 10

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

9 / 10

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

10 / 10

10. CLOG Pages are never cached in memory?

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