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 public schema?

2 / 20

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

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

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

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

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

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

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8. Files are logically split into pages?

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9. Each Database has its own System Catalog?

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10. Which of below are predefined schemas?

choose 3

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11. Postgres uses a thread based process model?

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12. What is the purpose of the template1 database?

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

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

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15. Some System Catalog tables are common to all databases in the cluster?

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16. Which 3 databases exist directly after cluster initialization?

choose 3 options

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17. Tablespaces can be used to segregate data based on performance needs?

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

19 / 20

19. Users should not modify the template0 database

20 / 20

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

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

2 / 10

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

3 / 10

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

4 / 10

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

choose 3

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5. Which of the below are valid Isolations Levels?

choose 2

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

7 / 10

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

8 / 10

8. What is the default Isolation Level?

9 / 10

9. A phantom read anomaly occurs when?

10 / 10

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

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

2 / 10

2. at any one time Postgres can have several versions of a row?

3 / 10

3. status of a subtransaction is written into CLOG?

4 / 10

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

5 / 10

5. What does an Item Pointer contain?

choose 3

6 / 10

6. If a transaction is read only which kind of Transaction ID is it allocated?

7 / 10

7. Tuples can also be referred to as columns?

8 / 10

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

9 / 10

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

10 / 10

10. indexes do not use row versioning?

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