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. What is the purpose of wal writer?

2 / 20

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

3 / 20

3. What is a schema?

4 / 20

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

5 / 20

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

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6. Which of below are predefined schemas?

choose 3

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7. To understand each other, a client and a server must use one and the same interfacing protocol?

8 / 20

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

9 / 20

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

10 / 20

10. What is the purpose of the postgres database?

11 / 20

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

12 / 20

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

13 / 20

13. Which of below are predefined schemas?

choose 2

14 / 20

14. The default Page size is 2k?

15 / 20

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

16 / 20

16. Which fork is specific for unlogged tables?

17 / 20

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

18 / 20

18. Users should not modify the template0 database

19 / 20

19. What is the point of the pg_global tablespace?

20 / 20

20. Which 3 databases exist directly after cluster initialization?

choose 3 options

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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. Which parameters sets the database default isolation level?

2 / 10

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

3 / 10

3. What are some of database features we can use to avoid a non repeatable read?

Select more than 1 answer below:

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

choose 3

9 / 10

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

10 / 10

10. Which of the below are valid Isolations Levels?

choose 2

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. If a transaction aborts, all page changes are reverted(rolled back) in place?

2 / 10

2. What does an Item Pointer contain?

choose 3

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

7. Which of the below are true about a Pages Item Pointer?

8 / 10

8. status of a subtransaction is written into CLOG?

9 / 10

9. CLOG files are stored in which directory?

10 / 10

10. a transaction containing a savepoint is will still be considered as only a single transaction?

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0%