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. Which fork contains the actual table data?

2 / 20

2. Which of below are predefined schemas?

choose 2

3 / 20

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

4 / 20

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

5 / 20

5. What is the name of the system catalog table for relations?

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6. Each Database has its own System Catalog?

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

8 / 20

8. What is the purpose of autovacuum?

9 / 20

9. The default Page size is 2k?

10 / 20

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

Choose 2 option

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

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

13 / 20

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

14 / 20

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

15 / 20

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

16 / 20

16. What is the purpose of wal writer?

17 / 20

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

18 / 20

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

19 / 20

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

20 / 20

20. What is the purpose of the public schema?

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

2 / 10

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

3 / 10

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

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

5 / 10

5. The SQL standard specifies three isolation levels?

6 / 10

6. What is the default Isolation Level?

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

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

2 / 10

2. Page free space can often become fragmented?

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

7. status of a subtransaction is written into CLOG?

8 / 10

8. If a transaction aborts, all page changes are reverted(rolled back) in place?

9 / 10

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

choose 2

10 / 10

10. Information about subtransactions is stored under?

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