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 point of the pg_global tablespace?

2 / 20

2. What is the purpose of the postgres database?

3 / 20

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

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

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

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6. Which of below are predefined schemas?

choose 3

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7. System Catalog tables begin with which prefix?

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

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9. Which fork contains the actual table data?

10 / 20

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

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11. Which of below are predefined schemas?

choose 2

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

13 / 20

13. What is the purpose of wal writer?

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14. A Postgres cluster consists of 2 or more physical servers accessing one Postgres Instance?

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

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

17 / 20

17. Postgres uses a thread based process model?

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

19 / 20

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

20 / 20

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

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

2 / 10

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

3 / 10

3. What are some of database features we can use to avoid a non repeatable read?

Select more than 1 answer below:

4 / 10

4. The SQL standard specifies three isolation levels?

5 / 10

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

6 / 10

6. What is the default Isolation Level?

7 / 10

7. Which of the below are valid Isolations Levels?

choose 2

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. A phantom read anomaly occurs when?

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

2 / 10

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

3 / 10

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

4 / 10

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

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

6 / 10

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

7 / 10

7. Page free space can often become fragmented?

8 / 10

8. The page header is located in the highest address?

9 / 10

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

10 / 10

10. Information about subtransactions is stored under?

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