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.

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1. How does Postgres know which schema to use if not specified?

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2. What is the purpose of the template1 database?

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

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

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5. Which of below are predefined schemas?

choose 3

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

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7. Users should not modify the template0 database

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

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9. Postgres uses a thread based process model?

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10. TOAST tables reside in a seperate schema?

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

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12. What is the name of the system catalog table for relations?

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

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

choose 3

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15. Which of below are predefined schemas?

choose 2

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

Choose 2 option

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17. Files are logically split into pages?

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

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

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20. The default Page size is 2k?

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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 default Isolation Level?

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

choose 3

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

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

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

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

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

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

9 / 10

9. A phantom read anomaly occurs when?

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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. Which 2 items does a Virtual XID consist of?

2 / 10

2. When a transaction is committed Postgres uses a special <replace with answer> structure?

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3. CLOG contains how many bits for each transaction?

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4. Rows of TOAST tables are handled in such a way that they are never update?

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

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

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

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

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

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

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