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 tablespaces can only be assigned for use by one database

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3. What is the purpose of wal writer?

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

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5. Which fork contains the actual table data?

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

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7. What is the purpose of the postgres database?

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8. What is the purpose of the template0 database?

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9. The default Page size is 2k?

10 / 20

10. What is the purpose of the visibility map?

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

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12. Which of below are predefined schemas?

choose 2

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

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14. What is another name for the postgres process?

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15. Which 3 databases exist directly after cluster initialization?

choose 3 options

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16. What is the purpose of the public schema?

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

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

19 / 20

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

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

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

3 / 10

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

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

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5. A phantom read anomaly occurs when?

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

choose 3

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

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8. non-repeatable read anomaly occurs when?

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

2 / 10

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

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

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5. Tuples can also be referred to as columns?

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

7 / 10

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

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

9 / 10

9. Which 2 items does a Virtual XID consist of?

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

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