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

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

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

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4. What is the default standard size for a fork file?

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

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6. The default Page size is 2k?

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

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8. Which of below are predefined schemas?

choose 3

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9. System Catalog tables begin with which prefix?

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10. Which fork is specific for unlogged tables?

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11. What is the purpose of wal writer?

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12. Files are logically split into pages?

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13. pg_catalog schema is used to store system catalog tables?

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14. What is the name of the directory that contains the files related to the Postgres cluster?

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

Choose 2 option

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

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17. Tablespaces are used to define physical data layout?

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

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

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20. Each Database has its own System Catalog?

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

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

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

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5. Which of the below are valid Isolations Levels?

choose 2

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

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

Select more than 1 answer below:

8 / 10

8. What is the default Isolation Level?

9 / 10

9. A phantom read anomaly occurs when?

10 / 10

10. non-repeatable read anomaly occurs when?

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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. CLOG files are stored in which directory?

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

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

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

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5. Tuples can also be referred to as columns?

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

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7. Information about subtransactions is stored under?

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

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

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

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