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. Tablespaces are used to define physical data layout?

2 / 20

2. What is the purpose of wal writer?

3 / 20

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

4 / 20

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

5 / 20

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

6 / 20

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

7 / 20

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

choose 3

8 / 20

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

9 / 20

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

10 / 20

10. Which 3 databases exist directly after cluster initialization?

choose 3 options

11 / 20

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

12 / 20

12. What is the point of the pg_global tablespace?

13 / 20

13. What is the purpose of the visibility map?

14 / 20

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

15 / 20

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

16 / 20

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

17 / 20

17. What is another name for the postgres process?

18 / 20

18. Which of below are predefined schemas?

choose 2

19 / 20

19. What is a schema?

20 / 20

20. Each Database has its own System Catalog?

Your score is

0%

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. non-repeatable read anomaly occurs when?

2 / 10

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

3 / 10

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

4 / 10

4. The SQL standard specifies three isolation levels?

5 / 10

5. Which of the below are valid Isolations Levels?

choose 2

6 / 10

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

7 / 10

7. Which parameters sets the database default isolation level?

8 / 10

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

9 / 10

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

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

2 / 10

2. status of a subtransaction is written into CLOG?

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

6. Page free space can often become fragmented?

7 / 10

7. Information about subtransactions is stored under?

8 / 10

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

9 / 10

9. Tuples can also be referred to as columns?

10 / 10

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

Your score is

0%