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 purpose of wal writer?

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

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3. What is the purpose of autovacuum?

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

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

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

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7. Which fork contains the actual table data?

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8. What is the purpose of the template0 database?

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

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10. What is the point of the pg_global tablespace?

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

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

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

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

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

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16. Which 3 databases exist directly after cluster initialization?

choose 3 options

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

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18. The pg_default tablespace should never be used to create user tables?

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19. Files are logically split into pages?

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

choose 3

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

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

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

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4. Which of the below are valid Isolations Levels?

choose 2

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5. What is the default Isolation Level?

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

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

choose 3

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

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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. Snapshot isolation is preferred but increases the number of required locks?

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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 files are stored in which directory?

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

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

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

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

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6. What does an Item Pointer contain?

choose 3

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7. Information about subtransactions is stored under?

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

choose 2

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9. CLOG contains how many bits for each transaction?

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

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