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. If we create a new tablespace which directory will symbolic links be created from?

2 / 20

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

3 / 20

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

4 / 20

4. System Catalog tables begin with which prefix?

5 / 20

5. Tablespaces can be used to segregate data based on performance needs?

6 / 20

6. Each Database has its own System Catalog?

7 / 20

7. A single Postgres Instance can server only one database?

8 / 20

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

choose 2

9 / 20

9. What is the purpose of the template1 database?

10 / 20

10. What is the purpose of the visibility map?

11 / 20

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

12 / 20

12. What is another name for the postgres process?

13 / 20

13. What is a schema?

14 / 20

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

choose 3

15 / 20

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

16 / 20

16. How many rows in a page does Postgres aim to have before considering TOAST?

17 / 20

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

18 / 20

18. What is the point of the pg_global tablespace?

19 / 20

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

20 / 20

20. Which 3 databases exist directly after cluster initialization?

choose 3 options

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

Select more than 1 answer below:

2 / 10

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

3 / 10

3. Which parameters sets the database default isolation level?

4 / 10

4. A phantom read anomaly occurs when?

5 / 10

5. What is the default Isolation Level?

6 / 10

6. Which of the below are valid Isolations Levels?

choose 2

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

choose 3

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

2 / 10

2. Information about subtransactions is stored under?

3 / 10

3. The page header is located in the highest address?

4 / 10

4. CLOG files are stored in which directory?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. CLOG contains how many bits for each transaction?

Your score is

0%