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. A single Postgres Instance can server only one database?

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

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

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

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

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

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

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

choose 3

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9. What is the purpose of wal writer?

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10. What is the name of the 2 default tablespaces created after initialization?

choose 2

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

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

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13. Postgres uses a thread based process model?

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

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15. Each Database has its own System Catalog?

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16. Which fork is specific for unlogged tables?

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

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18. What is the purpose of the public schema?

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19. Tablespaces are used to define physical data layout?

20 / 20

20. TOAST tables reside in a seperate 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. Which isolation level in theory could mean an application does not have to consider isolation anomalies?

2 / 10

2. The SQL standard specifies three isolation levels?

3 / 10

3. Which of the below are valid Isolations Levels?

choose 2

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

choose 3

5 / 10

5. non-repeatable read anomaly occurs when?

6 / 10

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

7 / 10

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

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

9 / 10

9. What is the default Isolation Level?

10 / 10

10. What are some of database features we can use to avoid a non repeatable 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. at any one time Postgres can have several versions of a row?

2 / 10

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

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3. CLOG files are stored in which directory?

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

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5. indexes do not use row versioning?

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

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7. Information about subtransactions is stored under?

8 / 10

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

9 / 10

9. CLOG contains how many bits for each transaction?

10 / 10

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

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