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

2 / 20

2. What is a schema?

3 / 20

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

4 / 20

4. When PostgreSQL is running what can it be referred to as?

Choose 2 option

5 / 20

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

6 / 20

6. Tablespaces are used to define physical data layout?

7 / 20

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

8 / 20

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

9 / 20

9. The default Page size is 2k?

10 / 20

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

11 / 20

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

choose 3

12 / 20

12. Each Database has its own System Catalog?

13 / 20

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

14 / 20

14. TOAST tables reside in a seperate schema?

15 / 20

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

16 / 20

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

17 / 20

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

18 / 20

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

19 / 20

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

20 / 20

20. Which of below are predefined schemas?

choose 2

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

choose 3

3 / 10

3. Which of the below are valid Isolations Levels?

choose 2

4 / 10

4. What is the default Isolation Level?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

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

2 / 10

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

3 / 10

3. indexes do not use row versioning?

4 / 10

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

5 / 10

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

6 / 10

6. virtual IDs exist only in PGDATA/pg_vxid when not cached?

7 / 10

7. CLOG Pages are never cached in memory?

8 / 10

8. Page free space can often become fragmented?

9 / 10

9. status of a subtransaction is written into CLOG?

10 / 10

10. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

Your score is

0%