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

2 / 20

2. What is another name for the postgres process?

3 / 20

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

4 / 20

4. Tablespaces are used to define physical data layout?

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5. Files are logically split into pages?

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

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

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8. What command is used to create the Postgres cluster?

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9. Users should not modify the template0 database

10 / 20

10. Which fork is specific for unlogged tables?

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11. It is the postmasters job to listener for incoming connections?

12 / 20

12. When PostgreSQL is running what can it be referred to as?

Choose 2 option

13 / 20

13. What is the purpose of the template1 database?

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14. Which fork contains the actual table data?

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15. Which of below are predefined schemas?

choose 2

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

17 / 20

17. What 3 files/forks as a minimum make up a table on disk?

18 / 20

18. Each Database has its own System Catalog?

19 / 20

19. Which of below are predefined schemas?

choose 3

20 / 20

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

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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. A phantom read anomaly occurs when?

2 / 10

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

3 / 10

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

4 / 10

4. The SQL standard specifies three isolation levels?

5 / 10

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

choose 3

6 / 10

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

7 / 10

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

8 / 10

8. What is the default Isolation Level?

9 / 10

9. Which parameters sets the database default isolation level?

10 / 10

10. Which of the below are valid Isolations Levels?

choose 2

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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. indexes do not use row versioning?

2 / 10

2. What does an Item Pointer contain?

choose 3

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

7. Indexes values also support multi versioning with several versions of an index value existing at any point in time?

8 / 10

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

9 / 10

9. status of a subtransaction is written into CLOG?

10 / 10

10. Information about subtransactions is stored under?

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