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.

1 / 20

1. What is the purpose of the template1 database?

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

3 / 20

3. What is the purpose of the postgres database?

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

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

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6. Users should not modify the template0 database

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

choose 3

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

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

10 / 20

10. Tablespaces are used to define physical data layout?

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11. What column in system catalogs servers as the Primary Key

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12. Which of below are predefined schemas?

choose 3

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13. System Catalog tables begin with which prefix?

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14. What is the purpose of autovacuum?

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15. How many rows in a page does Postgres aim to have before considering TOAST?

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

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17. Which fork contains the actual table data?

18 / 20

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

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

20 / 20

20. Files are logically split into pages?

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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 of the below are valid Isolations Levels?

choose 2

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

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

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

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

6 / 10

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

7 / 10

7. The SQL standard specifies three isolation levels?

8 / 10

8. What is the default Isolation Level?

9 / 10

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

10 / 10

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

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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. Which function can we use to find the current transaction ID?

2 / 10

2. Information about subtransactions is stored under?

3 / 10

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

4 / 10

4. Which 2 of the below represent transaction IDs used for row versioning?

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

6 / 10

6. Which 2 items does a Virtual XID consist of?

7 / 10

7. When a transaction is committed Postgres uses a special <replace with answer> structure?

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8. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

9 / 10

9. When a row is created, its xmin value is set to the transaction ID of which command?

10 / 10

10. In Postgres, tables are often referred to as which of the below?

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