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. Which of below are predefined schemas?

choose 2

2 / 20

2. What is another name for the postgres process?

3 / 20

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

choose 2

4 / 20

4. Which fork contains the actual table data?

5 / 20

5. Users should not modify the template0 database

6 / 20

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

7 / 20

7. Which of below are predefined schemas?

choose 3

8 / 20

8. Files are logically split into pages?

9 / 20

9. The default Page size is 2k?

10 / 20

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

11 / 20

11. Tablespaces are used to define physical data layout?

12 / 20

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

13 / 20

13. What is the purpose of the template0 database?

14 / 20

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

15 / 20

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

16 / 20

16. What is the purpose of the visibility map?

17 / 20

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

18 / 20

18. Each tablespaces can only be assigned for use by one database

19 / 20

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

20 / 20

20. What is a schema?

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

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

5. The SQL standard specifies three isolation levels?

6 / 10

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

7 / 10

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

choose 3

8 / 10

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

9 / 10

9. non-repeatable read anomaly occurs when?

10 / 10

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

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

2 / 10

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

3 / 10

3. CLOG files are stored in which directory?

4 / 10

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

5 / 10

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

6 / 10

6. CLOG Pages are never cached in memory?

7 / 10

7. status of a subtransaction is written into CLOG?

8 / 10

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

9 / 10

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

10 / 10

10. Postgres table physical data files are always cross compatible across platforms?

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