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 visibility map?

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

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

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

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

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

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7. What is the purpose of autovacuum?

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8. What is the purpose of the public schema?

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9. Tablespaces are used to define physical data layout?

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

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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 catalog that stores metadata for all cluster objects?

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13. Users should not modify the template0 database

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

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

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

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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 is a schema?

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19. What is the purpose of the postgres database?

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

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

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3. What is the default Isolation Level?

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

choose 3

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

6 / 10

6. The SQL standard specifies three isolation levels?

7 / 10

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

8 / 10

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

9 / 10

9. Which parameters sets the database default isolation level?

10 / 10

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

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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. virtual IDs exist only in PGDATA/pg_vxid when not cached?

2 / 10

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

3 / 10

3. psql provides a special mode that allows you to continue a transaction after a failure?

4 / 10

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

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

6 / 10

6. Tuples can also be referred to as columns?

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

choose 2

8 / 10

8. Information about subtransactions is stored under?

9 / 10

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

10 / 10

10. CLOG contains how many bits for each transaction?

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