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

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

2 / 20

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

3 / 20

pg_catalog schema is used to store system catalog tables?

4 / 20

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

5 / 20

What is the point of the pg_global tablespace?

6 / 20

What is the purpose of the public schema?

7 / 20

What is the purpose of the template1 database?

8 / 20

Tablespaces are used to define physical data layout?

9 / 20

TOAST tables reside in a seperate schema?

10 / 20

The information_schema schema provides information on Postgres release notes?

11 / 20

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

12 / 20

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

13 / 20

What command is used to create the Postgres cluster?

14 / 20

Which of below are predefined schemas?

choose 3

15 / 20

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

16 / 20

Who is the Author of the Postgres 14 Internals book?

17 / 20

What column in system catalogs servers as the Primary Key

18 / 20

Files are logically split into pages?

19 / 20

Postgres by default has built in connection pooling abilities?

20 / 20

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

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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

What is the default Isolation Level?

2 / 10

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

3 / 10

The SQL standard specifies three isolation levels?

4 / 10

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

choose 3

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

Which of the below are valid Isolations Levels?

choose 2

9 / 10

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

10 / 10

non-repeatable read anomaly occurs when?

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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

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

2 / 10

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

3 / 10

CLOG contains how many bits for each transaction?

4 / 10

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

5 / 10

CLOG files are stored in which directory?

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

Tuples can also be referred to as columns?

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