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. What is the purpose of wal writer?

3 / 20

3. System Catalog tables begin with which prefix?

4 / 20

4. What is another name for the postgres process?

5 / 20

5. Each tablespaces can only be assigned for use by one database

6 / 20

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

7 / 20

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

8 / 20

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

9 / 20

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

10 / 20

10. Users should not modify the template0 database

11 / 20

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

12 / 20

12. Which 3 databases exist directly after cluster initialization?

choose 3 options

13 / 20

13. What is a schema?

14 / 20

14. Which fork contains the actual table data?

15 / 20

15. What is the purpose of the template1 database?

16 / 20

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

17 / 20

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

18 / 20

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

19 / 20

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

20 / 20

20. Who is the Author of the Postgres 14 Internals book?

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. Which parameters sets the database default isolation level?

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

5. What is the default Isolation Level?

6 / 10

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

7 / 10

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

8 / 10

8. non-repeatable read anomaly occurs when?

9 / 10

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

10 / 10

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

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. status of a subtransaction is written into CLOG?

2 / 10

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

3 / 10

3. Information about subtransactions is stored under?

4 / 10

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

5 / 10

5. at any one time Postgres can have several versions of a row?

6 / 10

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

7 / 10

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

8 / 10

8. CLOG contains how many bits for each transaction?

9 / 10

9. Tuples can also be referred to as columns?

10 / 10

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

Your score is

0%