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. Which 3 databases exist directly after cluster initialization?

choose 3 options

3 / 20

3. A Postgres cluster consists of 2 or more physical servers accessing one Postgres Instance?

4 / 20

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

5 / 20

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

6 / 20

6. What is the purpose of the template0 database?

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

choose 3

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

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

10 / 20

10. What is a schema?

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11. A schema can belong to more than one database?

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

choose 2

13 / 20

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

14 / 20

14. Tablespaces are used to define physical data layout?

15 / 20

15. What is the purpose of the public schema?

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

17 / 20

17. What is the purpose of autovacuum?

18 / 20

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

Choose 2 option

19 / 20

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

20 / 20

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

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

choose 3

2 / 10

2. The SQL standard specifies three isolation levels?

3 / 10

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

4 / 10

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

5 / 10

5. Which parameters sets the database default isolation level?

6 / 10

6. non-repeatable read anomaly occurs when?

7 / 10

7. Which of the below are valid Isolations Levels?

choose 2

8 / 10

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

9 / 10

9. What is the default Isolation Level?

10 / 10

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

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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 do not use row versioning?

2 / 10

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

3 / 10

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

4 / 10

4. CLOG files are stored in which directory?

5 / 10

5. The page Special Space is located at the start of the page with highest address

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. status of a subtransaction is written into CLOG?

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