Postgres Quiz Archive

You have 200 seconds to answer 20 Random questions so think fast!

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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 default Page size is 2k?

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

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

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4. Which fork is specific for unlogged tables?

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5. Tablespaces are used to define physical data layout?

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6. Files are logically split into pages?

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

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

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

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10. What is the purpose of the template0 database?

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

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

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

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14. What is the purpose of autovacuum?

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15. It is the postmasters job to listener for incoming connections?

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

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17. Users should not modify the template0 database

18 / 20

18. Postgres uses a thread based process model?

19 / 20

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

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20. System Catalog tables begin with which prefix?

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

2 / 10

2. What is the default Isolation Level?

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

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4. Which parameters sets the database default isolation level?

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

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

7 / 10

7. A phantom read anomaly occurs when?

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

10 / 10

10. Which of the below are valid Isolations Levels?

choose 2

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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. The page header is located in the highest address?

3 / 10

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

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

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

6 / 10

6. What does an Item Pointer contain?

choose 3

7 / 10

7. Page free space can often become fragmented?

8 / 10

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

9 / 10

9. Which 2 of the below represent transaction IDs used for row versioning?

10 / 10

10. CLOG contains how many bits for each transaction?

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