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 name of the system catalog table for relations?

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2. What is the purpose of autovacuum?

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

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

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5. Which of below are predefined schemas?

choose 3

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

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7. Users should not modify the template0 database

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

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9. What is another name for the postgres process?

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10. What is the purpose of the template0 database?

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

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12. What is the purpose of the template1 database?

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13. To understand each other, a client and a server must use one and the same interfacing protocol?

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

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15. TOAST tables reside in a seperate schema?

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16. System Catalog tables begin with which prefix?

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

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

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19. Postgres uses a thread based process model?

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20. Which 3 databases exist directly after cluster initialization?

choose 3 options

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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 default Isolation Level?

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

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

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

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

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

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9. Which of the below are valid Isolations Levels?

choose 2

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

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

2 / 10

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

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3. A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

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4. Page free space can often become fragmented?

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5. a transaction containing a savepoint is will still be considered as only a single transaction?

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

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7. What does an Item Pointer contain?

choose 3

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8. Which function can we use to find the current transaction ID?

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9. CLOG contains how many bits for each transaction?

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10. Information about subtransactions is stored under?

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