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 is the default standard size for a fork file?

2 / 20

2. What is the purpose of wal writer?

3 / 20

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

4 / 20

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

Choose 2 option

5 / 20

5. Which 3 databases exist directly after cluster initialization?

choose 3 options

6 / 20

6. What is a schema?

7 / 20

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

8 / 20

8. What is the point of the pg_global tablespace?

9 / 20

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

10 / 20

10. Which fork is specific for unlogged tables?

11 / 20

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

12 / 20

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

13 / 20

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

choose 2

14 / 20

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

15 / 20

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

16 / 20

16. Which fork contains the actual table data?

17 / 20

17. The default Page size is 2k?

18 / 20

18. TOAST tables reside in a seperate schema?

19 / 20

19. Which of below are predefined schemas?

choose 2

20 / 20

20. What is the purpose of the visibility map?

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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 parameters sets the database default isolation level?

2 / 10

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

3 / 10

3. The SQL standard specifies three isolation levels?

4 / 10

4. What is the default Isolation Level?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. Which of the below are valid Isolations Levels?

choose 2

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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. The page header stores checksum and the sizes of the other parts of the page?

2 / 10

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

3 / 10

3. a transaction containing a savepoint is will still be considered as only a single transaction?

4 / 10

4. CLOG Pages are never cached in memory?

5 / 10

5. Information about subtransactions is stored under?

6 / 10

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

7 / 10

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

8 / 10

8. status of a subtransaction is written into CLOG?

9 / 10

9. Tuples can also be referred to as columns?

10 / 10

10. indexes do not use row versioning?

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