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 keeps track of available space within pages?

2 / 20

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

3 / 20

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

Choose 2 option

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

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5. TOAST tables reside in a seperate schema?

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

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7. Tablespaces are used to define physical data layout?

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

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9. System Catalog tables begin with which prefix?

10 / 20

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

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

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12. Users should not modify the template0 database

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

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14. What is the purpose of the template0 database?

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

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

17 / 20

17. What is a schema?

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18. Which 3 databases exist directly after cluster initialization?

choose 3 options

19 / 20

19. What is the point of the pg_global tablespace?

20 / 20

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

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

2 / 10

2. Which of the below are valid Isolations Levels?

choose 2

3 / 10

3. The SQL standard specifies three isolation levels?

4 / 10

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

5 / 10

5. What is the default Isolation Level?

6 / 10

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

7 / 10

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

choose 3

8 / 10

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

Select more than 1 answer below:

9 / 10

9. Which parameters sets the database default isolation level?

10 / 10

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

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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. Which 2 items does a Virtual XID consist of?

2 / 10

2. When a transaction is committed Postgres uses a special <replace with answer> structure?

3 / 10

3. CLOG Pages are never cached in memory?

4 / 10

4. Information about subtransactions is stored under?

5 / 10

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

6 / 10

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

7 / 10

7. When a row is created, its xmin value is set to the transaction ID of which command?

8 / 10

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

9 / 10

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

10 / 10

10. Page free space can often become fragmented?

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