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 command is used to create the Postgres cluster?

2 / 20

2. The default Page size is 2k?

3 / 20

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

4 / 20

4. System Catalog tables begin with which prefix?

5 / 20

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

6 / 20

6. What is the default standard size for a fork file?

7 / 20

7. TOAST tables reside in a seperate schema?

8 / 20

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

9 / 20

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

10 / 20

10. Some System Catalog tables are common to all databases in the cluster?

11 / 20

11. Users should not modify the template0 database

12 / 20

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

13 / 20

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

14 / 20

14. Tablespaces are used to define physical data layout?

15 / 20

15. Which 3 databases exist directly after cluster initialization?

choose 3 options

16 / 20

16. What is a schema?

17 / 20

17. What is the purpose of the postgres database?

18 / 20

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

19 / 20

19. Which of below are predefined schemas?

choose 2

20 / 20

20. What is the purpose of the template0 database?

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. The SQL standard specifies three isolation levels?

2 / 10

2. Which parameters sets the database default isolation level?

3 / 10

3. Which of the below are valid Isolations Levels?

choose 2

4 / 10

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

Select more than 1 answer below:

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

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. UPDATE can be regarded as which 2 separate operations?

2 / 10

2. status of a subtransaction is written into CLOG?

3 / 10

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

4 / 10

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

5 / 10

5. What does an Item Pointer contain?

choose 3

6 / 10

6. Information about subtransactions is stored under?

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

Your score is

0%