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 directory that contains the files related to the Postgres cluster?

2 / 20

2. Which of below are predefined schemas?

choose 2

3 / 20

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

4 / 20

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

5 / 20

5. Which fork is specific for unlogged tables?

6 / 20

6. What is the purpose of the template1 database?

7 / 20

7. To understand each other, a client and a server must use one and the same interfacing protocol?

8 / 20

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

9 / 20

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

10 / 20

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

11 / 20

11. The default Page size is 2k?

12 / 20

12. What is another name for the postgres process?

13 / 20

13. What is the purpose of the public schema?

14 / 20

14. What is the purpose of the postgres database?

15 / 20

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

16 / 20

16. What is the purpose of wal writer?

17 / 20

17. What is a schema?

18 / 20

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

19 / 20

19. What is the purpose of the visibility map?

20 / 20

20. Files are logically split into pages?

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

2 / 10

2. The SQL standard specifies three isolation levels?

3 / 10

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

choose 3

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

Select more than 1 answer below:

9 / 10

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

10 / 10

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

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

2 / 10

2. CLOG files are stored in which directory?

3 / 10

3. What does an Item Pointer contain?

choose 3

4 / 10

4. a transaction containing a savepoint is will still be considered as only a single transaction?

5 / 10

5. CLOG contains how many bits for each transaction?

6 / 10

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

7 / 10

7. status of a subtransaction is written into CLOG?

8 / 10

8. The page Special Space is located at the start of the page with highest address

9 / 10

9. The page header stores checksum and the sizes of the other parts of the page?

10 / 10

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

Your score is

0%