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 name of the catalog that stores metadata for all cluster objects?

2 / 20

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

3 / 20

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

4 / 20

4. Users should not modify the template0 database

5 / 20

5. Which 3 databases exist directly after cluster initialization?

choose 3 options

6 / 20

6. System Catalog tables begin with which prefix?

7 / 20

7. The default Page size is 2k?

8 / 20

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

9 / 20

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

10 / 20

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

choose 2

11 / 20

11. The pg_default tablespace should never be used to create user tables?

12 / 20

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

13 / 20

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

14 / 20

14. Which of the below objects can be referred to as relations?

choose 3

15 / 20

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

16 / 20

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

17 / 20

17. What is the purpose of the visibility map?

18 / 20

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

19 / 20

19. What is the name of the mechanism used to store a row bigger than a page size?

20 / 20

20. What is the purpose of the public schema?

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. A phantom read anomaly occurs when?

2 / 10

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

3 / 10

3. What is the default Isolation Level?

4 / 10

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

choose 3

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

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. Which of the below are valid Isolations Levels?

choose 2

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. Information about subtransactions is stored under?

2 / 10

2. CLOG files are stored in which directory?

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

6. Tuples can also be referred to as columns?

7 / 10

7. CLOG contains how many bits for each transaction?

8 / 10

8. Page free space can often become fragmented?

9 / 10

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

10 / 10

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

Your score is

0%