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 fork is specific for unlogged tables?

2 / 20

2. What is the purpose of the template1 database?

3 / 20

3. What is the purpose of the postgres database?

4 / 20

4. pg_catalog schema is used to store system catalog tables?

5 / 20

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

6 / 20

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

7 / 20

7. Each Database has its own System Catalog?

8 / 20

8. Users should not modify the template0 database

9 / 20

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

10 / 20

10. What is the purpose of the public schema?

11 / 20

11. What is the name of the directory that contains the files related to the Postgres cluster?

12 / 20

12. Which fork contains the actual table data?

13 / 20

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

14 / 20

14. Tablespaces are used to define physical data layout?

15 / 20

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

16 / 20

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

17 / 20

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

18 / 20

18. What is the purpose of the visibility map?

19 / 20

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

20 / 20

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

Your score is

0%

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. Which of the below are valid Isolations Levels?

choose 2

3 / 10

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

4 / 10

4. The SQL standard specifies three isolation levels?

5 / 10

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

choose 3

6 / 10

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

7 / 10

7. non-repeatable read anomaly occurs when?

8 / 10

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

9 / 10

9. What are some of database features we can use to avoid a non repeatable read?

Select more than 1 answer below:

10 / 10

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

Your score is

0%

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

2 / 10

2. CLOG Pages are never cached in memory?

3 / 10

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

4 / 10

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

5 / 10

5. If a transaction aborts, all page changes are reverted(rolled back) in place?

6 / 10

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

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

9 / 10

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

10 / 10

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

Your score is

0%