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

2 / 20

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

3 / 20

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

choose 2

4 / 20

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

5 / 20

5. What is the point of the pg_global tablespace?

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6. Postgres server spawns a new backend session for each connection?

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

8 / 20

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

9 / 20

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

10 / 20

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

11 / 20

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

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12. What is the purpose of the postgres database?

13 / 20

13. Each Database has its own System Catalog?

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14. Which 3 databases exist directly after cluster initialization?

choose 3 options

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

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16. What is the purpose of the public schema?

17 / 20

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

18 / 20

18. System Catalog tables begin with which prefix?

19 / 20

19. Some System Catalog tables are common to all databases in the cluster?

20 / 20

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

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

2 / 10

2. A phantom read anomaly occurs when?

3 / 10

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

choose 3

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

8. Which parameters sets the database default isolation level?

9 / 10

9. What is the default Isolation Level?

10 / 10

10. non-repeatable read anomaly occurs when?

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

3 / 10

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

choose 2

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

7. Page free space can often become fragmented?

8 / 10

8. Which 2 items does a Virtual XID consist of?

9 / 10

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

10 / 10

10. CLOG files are stored in which directory?

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