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. The information_schema schema provides information on Postgres release notes?

2 / 20

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

3 / 20

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

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4. A schema can belong to more than one database?

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

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

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7. Which fork contains the actual table data?

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

choose 2

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9. What is the purpose of the template1 database?

10 / 20

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

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

12 / 20

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

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13. System Catalog tables begin with which prefix?

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

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15. Which 3 databases exist directly after cluster initialization?

choose 3 options

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

17 / 20

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

18 / 20

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

19 / 20

19. What is the purpose of the public schema?

20 / 20

20. Which of below are predefined schemas?

choose 2

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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. A phantom read anomaly occurs when?

2 / 10

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

3 / 10

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

4 / 10

4. What is the default Isolation Level?

5 / 10

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

6 / 10

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

7 / 10

7. The SQL standard specifies three isolation levels?

8 / 10

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

9 / 10

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

Select more than 1 answer below:

10 / 10

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

choose 3

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

2 / 10

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

3 / 10

3. Information about subtransactions is stored under?

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

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

choose 2

8 / 10

8. indexes do not use row versioning?

9 / 10

9. What does an Item Pointer contain?

choose 3

10 / 10

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

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