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. Which fork contains the actual table data?

2 / 20

2. What is another name for the postgres process?

3 / 20

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

4 / 20

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

5 / 20

5. What is the purpose of the postgres database?

6 / 20

6. What is the purpose of the template1 database?

7 / 20

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

8 / 20

8. What is the purpose of autovacuum?

9 / 20

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

10 / 20

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

11 / 20

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

12 / 20

12. What is the purpose of wal writer?

13 / 20

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

choose 3

14 / 20

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

15 / 20

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

16 / 20

16. Which 3 databases exist directly after cluster initialization?

choose 3 options

17 / 20

17. Tablespaces are used to define physical data layout?

18 / 20

18. What is a schema?

19 / 20

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

20 / 20

20. What is the purpose of the template0 database?

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

2 / 10

2. What is the default Isolation Level?

3 / 10

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

4 / 10

4. A phantom read anomaly occurs when?

5 / 10

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

6 / 10

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

7 / 10

7. The SQL standard specifies three isolation levels?

8 / 10

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

Select more than 1 answer below:

9 / 10

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

10 / 10

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

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

3 / 10

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

4 / 10

4. Which 2 items does a Virtual XID consist of?

5 / 10

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

6 / 10

6. Page free space can often become fragmented?

7 / 10

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

8 / 10

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

9 / 10

9. CLOG files are stored in which directory?

10 / 10

10. CLOG Pages are never cached in memory?

Your score is

0%