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. Files are logically split into pages?

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2. pg_catalog schema is used to store system catalog tables?

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3. Which fork is specific for unlogged tables?

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4. What is the point of the pg_global tablespace?

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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. TOAST tables reside in a seperate schema?

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

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

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

10 / 20

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

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

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

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13. What is the purpose of the visibility map?

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

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15. Postgres uses a thread based process model?

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16. What is the purpose of the public schema?

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17. Which of below are predefined schemas?

choose 3

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18. Each Database has its own System Catalog?

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

20 / 20

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 are some of database features we can use to avoid a non repeatable read?

Select more than 1 answer below:

2 / 10

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

3 / 10

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

4 / 10

4. Which of the below are valid Isolations Levels?

choose 2

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5. What is the default Isolation Level?

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6. Which parameters sets the database default isolation level?

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

10 / 10

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

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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 contains how many bits for each transaction?

2 / 10

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

3 / 10

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

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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. Tuples can also be referred to as columns?

6 / 10

6. CLOG Pages are never cached in memory?

7 / 10

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

8 / 10

8. status of a subtransaction is written into CLOG?

9 / 10

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

10 / 10

10. Postgres table physical data files are always cross compatible across platforms?

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