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.

1 / 20

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

2 / 20

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

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

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

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

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

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

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8. What is the purpose of the template0 database?

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

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

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

choose 3

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

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

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

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

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16. The pg_default tablespace should never be used to create user tables?

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17. What is a schema?

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

Choose 2 option

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19. What is the purpose of the visibility map?

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20. Which of below are predefined schemas?

choose 3

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

2 / 10

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

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

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4. A phantom read anomaly occurs when?

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

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6. Which parameters sets the database default isolation level?

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

8 / 10

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

9 / 10

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

10 / 10

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

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

2 / 10

2. The page header is located in the highest address?

3 / 10

3. Each page has a layer that usually consists of?

choose 2

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4. indexes do not use row versioning?

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

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

7 / 10

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

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8. Information about subtransactions is stored under?

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9. When a row is created, its xmin value is set to the transaction ID of which command?

10 / 10

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

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