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 default standard size for a fork file?

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

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

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

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5. System Catalog tables begin with which prefix?

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

choose 3

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7. What is the purpose of the visibility map?

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8. Postgres uses a thread based process model?

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

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10. Which of below are predefined schemas?

choose 2

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

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12. Files are logically split into pages?

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

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14. Which of below are predefined schemas?

choose 3

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

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16. It is the postmasters job to listener for incoming connections?

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17. What is the purpose of autovacuum?

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

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

20 / 20

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

Choose 2 option

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

3 / 10

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

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4. Which parameters sets the database default isolation level?

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5. What is the default Isolation Level?

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6. The SQL standard specifies three isolation levels?

7 / 10

7. A phantom read anomaly occurs when?

8 / 10

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

9 / 10

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

10 / 10

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

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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?

2 / 10

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

3 / 10

3. Rows of TOAST tables are handled in such a way that they are never update?

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

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5. CLOG contains how many bits for each transaction?

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6. The page header stores checksum and the sizes of the other parts of the page?

7 / 10

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

8 / 10

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

9 / 10

9. UPDATE can be regarded as which 2 separate operations?

10 / 10

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

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