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 process first launched at server start?

2 / 20

2. Each Database has its own System Catalog?

3 / 20

3. Which fork is specific for unlogged tables?

4 / 20

4. What is another name for the postgres process?

5 / 20

5. What is the purpose of the postgres database?

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

7 / 20

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

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

11 / 20

11. What is the purpose of the public schema?

12 / 20

12. How does Postgres know which schema to use if not specified?

13 / 20

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

14 / 20

14. System Catalog tables begin with which prefix?

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

16 / 20

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

17 / 20

17. What is the point of the pg_global tablespace?

18 / 20

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

choose 2

19 / 20

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

20 / 20

20. Which fork contains the actual table data?

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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. non-repeatable read anomaly occurs when?

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

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

choose 3

6 / 10

6. Which of the below are valid Isolations Levels?

choose 2

7 / 10

7. The SQL standard specifies three isolation levels?

8 / 10

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

9 / 10

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

10 / 10

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

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

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

7. CLOG files are stored in which directory?

8 / 10

8. status of a subtransaction is written into CLOG?

9 / 10

9. A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

10 / 10

10. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

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