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. What is the purpose of wal writer?

2 / 20

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

3 / 20

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

4 / 20

4. Which fork is specific for unlogged tables?

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

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

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7. System Catalog tables begin with which prefix?

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

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

10 / 20

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

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

choose 3

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

13 / 20

13. What is the purpose of autovacuum?

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

15 / 20

15. The default Page size is 2k?

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16. What is a schema?

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

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18. Which of below are predefined schemas?

choose 2

19 / 20

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

20 / 20

20. Which fork contains the actual table data?

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

2 / 10

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

choose 3

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3. Which parameters sets the database default isolation level?

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4. non-repeatable read anomaly occurs when?

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

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

7 / 10

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

8 / 10

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

Select more than 1 answer below:

9 / 10

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

10 / 10

10. The SQL standard specifies three isolation levels?

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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 header stores checksum and the sizes of the other parts of the page?

2 / 10

2. What does an Item Pointer contain?

choose 3

3 / 10

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

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

5 / 10

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

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6. Which 2 of the below represent transaction IDs used for row versioning?

7 / 10

7. Page header sizes can be easily displayed using the <choose from answers> extension

8 / 10

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

9 / 10

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

10 / 10

10. CLOG contains how many bits for each transaction?

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