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. Postgres uses a thread based process model?

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

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

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

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

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6. What is the name of the catalog that stores metadata for all cluster objects?

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

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

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9. What is the purpose of the visibility map?

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

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

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12. What 3 files/forks as a minimum make up a table on disk?

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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. pg_catalog schema is used to store system catalog tables?

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

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16. System Catalog tables begin with which prefix?

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17. What is the purpose of wal writer?

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18. Users should not modify the template0 database

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

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20. Which fork contains the actual table data?

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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. A phantom read anomaly occurs when?

2 / 10

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

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

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

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

choose 3

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

10 / 10

10. Which isolation level in theory could mean an application does not have to consider isolation anomalies?

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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. Each page has a layer that usually consists of?

choose 2

2 / 10

2. CLOG Pages are never cached in memory?

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

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

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

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

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

8 / 10

8. Tuples can also be referred to as columns?

9 / 10

9. CLOG contains how many bits for each transaction?

10 / 10

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

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