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 uses a thread based process model?

2 / 20

2. Which 3 databases exist directly after cluster initialization?

choose 3 options

3 / 20

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

4 / 20

4. What is another name for the postgres process?

5 / 20

5. Which fork contains the actual table data?

6 / 20

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

7 / 20

7. What is the purpose of the public schema?

8 / 20

8. Users should not modify the template0 database

9 / 20

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

Choose 2 option

10 / 20

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

11 / 20

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

12 / 20

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

13 / 20

13. What is a schema?

14 / 20

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

15 / 20

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

16 / 20

16. What is the purpose of the visibility map?

17 / 20

17. The default Page size is 2k?

18 / 20

18. What is the name of the mechanism used to store a row bigger than a page size?

19 / 20

19. How does Postgres know which schema to use if not specified?

20 / 20

20. What is the purpose of the template1 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. Snapshot isolation is preferred but increases the number of required locks?

2 / 10

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

3 / 10

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

4 / 10

4. What is the default Isolation Level?

5 / 10

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

6 / 10

6. The SQL standard specifies three isolation levels?

7 / 10

7. Which of the below are valid Isolations Levels?

choose 2

8 / 10

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

9 / 10

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

10 / 10

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

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. Tuples can also be referred to as columns?

2 / 10

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

3 / 10

3. Which of the below are true about a Pages Item Pointer?

4 / 10

4. Page free space can often become fragmented?

5 / 10

5. UPDATE can be regarded as which 2 separate operations?

6 / 10

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

7 / 10

7. indexes do not use row versioning?

8 / 10

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

9 / 10

9. Each page has a layer that usually consists of?

choose 2

10 / 10

10. CLOG Pages are never cached in memory?

Your score is

0%