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?

2 / 20

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

3 / 20

3. Each Database has its own System Catalog?

4 / 20

4. Postgres uses a thread based process model?

5 / 20

5. How many files or forks on disk will a 10Mb table with no index have?

6 / 20

6. Tablespaces are used to define physical data layout?

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

8 / 20

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

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

10 / 20

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

11 / 20

11. What is the purpose of the public schema?

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12. Which of below are predefined schemas?

choose 3

13 / 20

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

14 / 20

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

15 / 20

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

16 / 20

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

17 / 20

17. What is the purpose of the template0 database?

18 / 20

18. Which 3 databases exist directly after cluster initialization?

choose 3 options

19 / 20

19. What is another name for the postgres process?

20 / 20

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

choose 2

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

3 / 10

3. Which of the below are valid Isolations Levels?

choose 2

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

8. Which parameters sets the database default isolation level?

9 / 10

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

choose 3

10 / 10

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

Your score is

0%

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. UPDATE can be regarded as which 2 separate operations?

2 / 10

2. indexes do not use row versioning?

3 / 10

3. virtual IDs exist only in PGDATA/pg_vxid when not cached?

4 / 10

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

5 / 10

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

6 / 10

6. CLOG files are stored in which directory?

7 / 10

7. Page header sizes can be easily displayed using the <choose from answers> extension

8 / 10

8. What does an Item Pointer contain?

choose 3

9 / 10

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

10 / 10

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

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