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. Each Database has its own System Catalog?

2 / 20

2. Postgres uses a thread based process model?

3 / 20

3. The default Page size is 2k?

4 / 20

4. Users should not modify the template0 database

5 / 20

5. Which of below are predefined schemas?

choose 2

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6. What is the point of the pg_global tablespace?

7 / 20

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

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

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

10 / 20

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

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11. What is the purpose of autovacuum?

12 / 20

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

13 / 20

13. What is the purpose of the template1 database?

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

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15. What is the purpose of the template0 database?

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

17 / 20

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

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18. When PostgreSQL is running what can it be referred to as?

Choose 2 option

19 / 20

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

20 / 20

20. Files are logically split into pages?

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

2 / 10

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

3 / 10

3. A phantom read anomaly occurs when?

4 / 10

4. Which parameters sets the database default isolation level?

5 / 10

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

6 / 10

6. Which of the below are valid Isolations Levels?

choose 2

7 / 10

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

8 / 10

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

9 / 10

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

choose 3

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

2 / 10

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

3 / 10

3. Tuples can also be referred to as columns?

4 / 10

4. CLOG contains how many bits for each transaction?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

9. index row headers like table row headers contain xmin and xmax fields?

10 / 10

10. indexes do not use row versioning?

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