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 of below are predefined schemas?

choose 2

2 / 20

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

3 / 20

3. Each Database has its own System Catalog?

4 / 20

4. pg_catalog schema is used to store system catalog tables?

5 / 20

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

6 / 20

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

7 / 20

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

8 / 20

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

9 / 20

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

10 / 20

10. What is the process first launched at server start?

11 / 20

11. The default Page size is 2k?

12 / 20

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

13 / 20

13. TOAST tables reside in a seperate schema?

14 / 20

14. When PostgreSQL is running what can it be referred to as?

Choose 2 option

15 / 20

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

16 / 20

16. What is the purpose of wal writer?

17 / 20

17. Which 3 databases exist directly after cluster initialization?

choose 3 options

18 / 20

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

19 / 20

19. Which fork is specific for unlogged tables?

20 / 20

20. What is the name of the catalog that stores metadata for all cluster objects?

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

2 / 10

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

3 / 10

3. What is the default Isolation Level?

4 / 10

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

Select more than 1 answer below:

5 / 10

5. The SQL standard specifies three isolation levels?

6 / 10

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

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

2 / 10

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

3 / 10

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

4 / 10

4. A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

9. CLOG contains how many bits for each transaction?

10 / 10

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

Your score is

0%