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

2 / 20

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

3 / 20

3. How many files or forks on disk will a 10Mb table with no index have?

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4. Which of below are predefined schemas?

choose 2

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5. Users should not modify the template0 database

6 / 20

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

7 / 20

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

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8. Which of below are predefined schemas?

choose 3

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

10 / 20

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

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

choose 3

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

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

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14. What is the purpose of the public schema?

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

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

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

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18. What 3 files/forks as a minimum make up a table on disk?

19 / 20

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

20 / 20

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

choose 2

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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. Which of the below are valid Isolations Levels?

choose 2

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

8. A phantom read anomaly occurs when?

9 / 10

9. What is the default Isolation Level?

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. CLOG Pages are never cached in memory?

2 / 10

2. CLOG contains how many bits for each transaction?

3 / 10

3. Page free space can often become fragmented?

4 / 10

4. The page header stores checksum and the sizes of the other parts of the page?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

8. Which function can we use to find the current transaction ID?

9 / 10

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

choose 2

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10. A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

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