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. The default Page size is 2k?

2 / 20

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

3 / 20

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

4 / 20

4. Tablespaces are used to define physical data layout?

5 / 20

5. What is the purpose of the visibility map?

6 / 20

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

7 / 20

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

8 / 20

8. What is the purpose of wal writer?

9 / 20

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

choose 2

10 / 20

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

11 / 20

11. Users should not modify the template0 database

12 / 20

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

Choose 2 option

13 / 20

13. Each Database has its own System Catalog?

14 / 20

14. What is the purpose of autovacuum?

15 / 20

15. What is the purpose of the public schema?

16 / 20

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

17 / 20

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

18 / 20

18. Postgres uses a thread based process model?

19 / 20

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

20 / 20

20. Which 3 databases exist directly after cluster initialization?

choose 3 options

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

2 / 10

2. Which of the below are valid Isolations Levels?

choose 2

3 / 10

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

4 / 10

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

5 / 10

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

choose 3

6 / 10

6. The SQL standard specifies three isolation levels?

7 / 10

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

8 / 10

8. Which parameters sets the database default isolation level?

9 / 10

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

10 / 10

10. What is the default Isolation Level?

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

2 / 10

2. Which 2 of the below represent transaction IDs used for row versioning?

3 / 10

3. Indexes values also support multi versioning with several versions of an index value existing at any point in time?

4 / 10

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

5 / 10

5. Tuples can also be referred to as columns?

6 / 10

6. The page Special Space is located at the start of the page with highest address

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. Postgres table physical data files are always cross compatible across platforms?

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