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. What is another name for the postgres process?

3 / 20

3. Which 3 databases exist directly after cluster initialization?

choose 3 options

4 / 20

4. What is the purpose of the postgres database?

5 / 20

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

6 / 20

6. What is the purpose of the visibility map?

7 / 20

7. Tablespaces are used to define physical data layout?

8 / 20

8. How many rows in a page does Postgres aim to have before considering TOAST?

9 / 20

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

10 / 20

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

11 / 20

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

12 / 20

12. What is the purpose of autovacuum?

13 / 20

13. Postgres server spawns a new backend session for each connection?

14 / 20

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

15 / 20

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

16 / 20

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

17 / 20

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

choose 2

18 / 20

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

19 / 20

19. What is the purpose of the template1 database?

20 / 20

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

Choose 2 option

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

2 / 10

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

choose 3

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

7. What is the default Isolation Level?

8 / 10

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

9 / 10

9. A phantom read anomaly occurs when?

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. CLOG Pages are never cached in memory?

2 / 10

2. index row headers like table row headers contain xmin and xmax fields?

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

6. The page header stores checksum and the sizes of the other parts of the page?

7 / 10

7. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

8 / 10

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

9 / 10

9. Page free space can often become fragmented?

10 / 10

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

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0%