Postgres Quiz Archive

You have 200 seconds to answer 20 Random questions so think fast!

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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 column in system catalogs servers as the Primary Key

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

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

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

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5. Postgres uses a thread based process model?

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

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7. What is the purpose of the template1 database?

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8. Which fork contains the actual table data?

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9. What is the purpose of the template0 database?

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

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

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12. What is another name for the postgres process?

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13. What is the point of the pg_global tablespace?

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14. System Catalog tables begin with which prefix?

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

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16. Files are logically split into pages?

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

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18. Which fork is specific for unlogged tables?

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

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20. What is the purpose of the public schema?

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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?

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

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

choose 3

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4. A phantom read anomaly occurs when?

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

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

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

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

9 / 10

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

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. Each page has a layer that usually consists of?

choose 2

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

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

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

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

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6. Information about subtransactions is stored under?

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7. Which of the below are true about a Pages Item Pointer?

8 / 10

8. Page free space can often become fragmented?

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

10 / 10

10. Tuples can also be referred to as columns?

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