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

Users should not modify the template0 database

2 / 20

Which fork contains the actual table data?

3 / 20

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

4 / 20

pg_catalog schema is used to store system catalog tables?

5 / 20

Each Database has its own System Catalog?

6 / 20

A single Postgres Instance can server only one database?

7 / 20

What is the purpose of wal writer?

8 / 20

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

9 / 20

The default Page size is 2k?

10 / 20

What is the purpose of the public schema?

11 / 20

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

12 / 20

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

Choose 2 option

13 / 20

Which fork is specific for unlogged tables?

14 / 20

What is the purpose of the template1 database?

15 / 20

Who is the Author of the Postgres 14 Internals book?

16 / 20

To be able to restore data consistency, Postgres maintains

17 / 20

Which of below are predefined schemas?

choose 2

18 / 20

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

choose 3

19 / 20

A schema can belong to more than one database?

20 / 20

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

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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

A phantom read anomaly occurs when?

2 / 10

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

3 / 10

Which of the below are valid Isolations Levels?

choose 2

4 / 10

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

5 / 10

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

6 / 10

What is the default Isolation Level?

7 / 10

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

8 / 10

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

9 / 10

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

choose 3

10 / 10

Which parameters sets the database default isolation level?

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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

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

2 / 10

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

3 / 10

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

4 / 10

Tuples can also be referred to as columns?

5 / 10

Information about subtransactions is stored under?

6 / 10

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

7 / 10

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

8 / 10

CLOG files are stored in which directory?

9 / 10

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

10 / 10

UPDATE can be regarded as which 2 separate operations?

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