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

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2. Each Database has its own System Catalog?

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3. What is the purpose of the visibility map?

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4. What is the name of the catalog that stores metadata for all cluster objects?

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5. TOAST tables reside in a seperate schema?

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6. What is the purpose of the public schema?

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7. Which of below are predefined schemas?

choose 3

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

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9. Users should not modify the template0 database

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

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11. What is another name for the postgres process?

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

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13. What is the point of the pg_global tablespace?

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

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15. What is the purpose of the template1 database?

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

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

Choose 2 option

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18. System Catalog tables begin with which prefix?

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19. Which of the below objects can be referred to as relations?

choose 3

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20. What is a schema?

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

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

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

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

Select more than 1 answer below:

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

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6. A phantom read anomaly occurs when?

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

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

choose 3

9 / 10

9. The SQL standard specifies three isolation levels?

10 / 10

10. Which parameters sets the database default isolation level?

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

2 / 10

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

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

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

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

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6. virtual IDs exist only in PGDATA/pg_vxid when not cached?

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

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

9 / 10

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

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10. psql provides a special mode that allows you to continue a transaction after a failure?

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