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. Files are logically split into pages?

2 / 20

2. What is the purpose of the template1 database?

3 / 20

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

4 / 20

4. It is the postmasters job to listener for incoming connections?

5 / 20

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

6 / 20

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

7 / 20

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

8 / 20

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

choose 2

9 / 20

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

10 / 20

10. Which 3 databases exist directly after cluster initialization?

choose 3 options

11 / 20

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

12 / 20

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

13 / 20

13. Which of below are predefined schemas?

choose 2

14 / 20

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

15 / 20

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

choose 3

16 / 20

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

17 / 20

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

18 / 20

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

19 / 20

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

20 / 20

20. Which fork is specific for unlogged tables?

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

2 / 10

2. Which parameters sets the database default isolation level?

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

6 / 10

6. non-repeatable read anomaly occurs when?

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. The SQL standard specifies three isolation levels?

10 / 10

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

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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. status of a subtransaction is written into CLOG?

3 / 10

3. A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

4 / 10

4. What does an Item Pointer contain?

choose 3

5 / 10

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

6 / 10

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

7 / 10

7. CLOG Pages are never cached in memory?

8 / 10

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

9 / 10

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

10 / 10

10. indexes do not use row versioning?

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