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.

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

2 / 20

2. Some System Catalog tables are common to all databases in the cluster?

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3. What is the purpose of the postgres database?

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4. The default Page size is 2k?

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

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6. What is the purpose of the visibility map?

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

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

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9. What is the purpose of the public schema?

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

choose 3

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11. TOAST tables reside in a seperate schema?

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12. Who is the Author of the Postgres 14 Internals book?

13 / 20

13. What is the purpose of wal writer?

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14. A schema can belong to more than one database?

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

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

choose 2

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17. What is the purpose of the template0 database?

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

19 / 20

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

20 / 20

20. What is the point of the pg_global tablespace?

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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. non-repeatable read anomaly occurs when?

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3. Which parameters sets the database default isolation level?

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

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

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

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7. Which of the below are valid Isolations Levels?

choose 2

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

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

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

3 / 10

3. What does an Item Pointer contain?

choose 3

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4. Page free space can often become fragmented?

5 / 10

5. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

6 / 10

6. Tuples can also be referred to as columns?

7 / 10

7. Information about subtransactions is stored under?

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

9 / 10

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

10 / 10

10. CLOG Pages are never cached in memory?

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