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

Which of below are predefined schemas?

choose 3

2 / 20

Which of below are predefined schemas?

choose 2

3 / 20

What is the purpose of the postgres database?

4 / 20

Postgres server spawns a new backend session for each connection?

5 / 20

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

choose 3

6 / 20

What is the purpose of the template1 database?

7 / 20

TOAST tables reside in a seperate schema?

8 / 20

Users should not modify the template0 database

9 / 20

Who is the Author of the Postgres 14 Internals book?

10 / 20

What is the default standard size for a fork file?

11 / 20

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

12 / 20

What is the point of the pg_global tablespace?

13 / 20

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

14 / 20

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

15 / 20

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

16 / 20

The information_schema schema provides information on Postgres release notes?

17 / 20

What is the purpose of the template0 database?

18 / 20

To be able to restore data consistency, Postgres maintains

19 / 20

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

choose 2

20 / 20

Postgres by default has built in connection pooling abilities?

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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

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

2 / 10

The SQL standard specifies three isolation levels?

3 / 10

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

4 / 10

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

5 / 10

Data Consistency is best handled at the application layer rather than at the database layer?

6 / 10

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

7 / 10

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

choose 3

8 / 10

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

Select more than 1 answer below:

9 / 10

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

10 / 10

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

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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

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

2 / 10

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

3 / 10

When a row is created, its xmin value is set to the transaction ID of which command?

4 / 10

at any one time Postgres can have several versions of a row?

5 / 10

Which 2 items does a Virtual XID consist of?

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

indexes do not use row versioning?

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