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.

1 / 20

1. What is the purpose of the public schema?

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2. What is the purpose of autovacuum?

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

4 / 20

4. The default Page size is 2k?

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

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

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

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

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

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10. Each Database has its own System Catalog?

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

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

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

choose 2

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

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15. Each tablespaces can only be assigned for use by one database

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16. Which of below are predefined schemas?

choose 2

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

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

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19. Which fork is specific for unlogged tables?

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

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

2 / 10

2. Which of the below are valid Isolations Levels?

choose 2

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

Select more than 1 answer below:

4 / 10

4. A phantom read anomaly occurs when?

5 / 10

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

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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 statements will start a transaction as Read Repeatable?

8 / 10

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

9 / 10

9. The SQL standard specifies three isolation levels?

10 / 10

10. Which parameters sets the database default isolation level?

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

2 / 10

2. UPDATE can be regarded as which 2 separate operations?

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

4 / 10

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

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

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6. Tuples can also be referred to as columns?

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

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

9 / 10

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

10 / 10

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

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