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 autovacuum?

2 / 20

2. What is the point of the pg_global tablespace?

3 / 20

3. Files are logically split into pages?

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

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

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6. What is the name of the mechanism used to store a row bigger than a page size?

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

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

choose 2

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9. What is a schema?

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10. What is the purpose of the visibility map?

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

choose 3

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

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

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14. Each Database has its own System Catalog?

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

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16. What is another name for the postgres process?

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

18 / 20

18. How many files or forks on disk will a 10Mb table with no index have?

19 / 20

19. Which of below are predefined schemas?

choose 2

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20. What is the purpose of wal writer?

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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. The SQL standard specifies three isolation levels?

2 / 10

2. What is the default Isolation Level?

3 / 10

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

choose 3

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

5 / 10

5. Which of the below are valid Isolations Levels?

choose 2

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

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

2 / 10

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

3 / 10

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

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

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. Tuples can also be referred to as columns?

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