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 purpose of the template1 database?

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2. What is the purpose of the postgres database?

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

choose 3

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

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

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

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

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8. Postgres uses a thread based process model?

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9. Each Database has its own System Catalog?

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

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

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12. What is the point of the pg_global tablespace?

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

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14. What is another name for the postgres process?

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15. Which 3 databases exist directly after cluster initialization?

choose 3 options

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16. What is the purpose of the public schema?

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17. System Catalog tables begin with which prefix?

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

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

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

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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. What is the default Isolation Level?

2 / 10

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

choose 3

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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. A phantom read anomaly occurs when?

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

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

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

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

9 / 10

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

10 / 10

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

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

3 / 10

3. What does an Item Pointer contain?

choose 3

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4. indexes do not use row versioning?

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

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

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

9 / 10

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

10 / 10

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

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