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.

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1. Which of below are predefined schemas?

choose 2

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

3 / 20

3. Postgres by default has built in connection pooling abilities?

4 / 20

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

5 / 20

5. What is the purpose of autovacuum?

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6. Which fork is specific for unlogged tables?

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

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8. What is the default standard size for a fork file?

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9. If we create a new tablespace which directory will symbolic links be created from?

10 / 20

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

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

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

13 / 20

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

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14. What is another name for the postgres process?

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15. To be able to restore data consistency, Postgres maintains

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

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17. What is the purpose of the postgres database?

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

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

20 / 20

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

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

Select more than 1 answer below:

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

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6. The SQL standard specifies three isolation levels?

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. non-repeatable 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. When a transaction is committed Postgres uses a special <replace with answer> structure?

2 / 10

2. CLOG Pages are never cached in memory?

3 / 10

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

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

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5. CLOG files are stored in which directory?

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

7 / 10

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

8 / 10

8. indexes do not use row versioning?

9 / 10

9. CLOG contains how many bits for each transaction?

10 / 10

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

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