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. What is the point of the pg_global tablespace?

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

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3. What is the purpose of autovacuum?

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

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

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

Choose 2 option

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7. System Catalog tables begin with which prefix?

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

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9. Postgres uses a thread based process model?

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10. Which of below are predefined schemas?

choose 2

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

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12. Each Database has its own System Catalog?

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

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14. Which fork is specific for unlogged tables?

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15. Files are logically split into pages?

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16. What is the purpose of the visibility map?

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17. What is the purpose of the postgres database?

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

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19. Which 3 databases exist directly after cluster initialization?

choose 3 options

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

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

choose 3

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

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

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7. Which of the below are valid Isolations Levels?

choose 2

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8. non-repeatable read anomaly occurs when?

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

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

2 / 10

2. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

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3. If a transaction is read only which kind of Transaction ID is it allocated?

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

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5. The page Special Space is located at the start of the page with highest address

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

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7. Page free space can often become fragmented?

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

9 / 10

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

10 / 10

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

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