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

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

2 / 20

What is the purpose of the template1 database?

3 / 20

To be able to restore data consistency, Postgres maintains

4 / 20

Some System Catalog tables are common to all databases in the cluster?

5 / 20

What is the point of the pg_global tablespace?

6 / 20

The default Page size is 2k?

7 / 20

The information_schema schema provides information on Postgres release notes?

8 / 20

What is the purpose of the template0 database?

9 / 20

Which of below are predefined schemas?

choose 2

10 / 20

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

11 / 20

System Catalog tables begin with which prefix?

12 / 20

What is another name for the postgres process?

13 / 20

What is the purpose of the public schema?

14 / 20

Each Database has its own System Catalog?

15 / 20

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

choose 3

16 / 20

What command is used to create the Postgres cluster?

17 / 20

Postgres uses a thread based process model?

18 / 20

Tablespaces are used to define physical data layout?

19 / 20

What is the purpose of wal writer?

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

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

2 / 10

A phantom read anomaly occurs when?

3 / 10

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

4 / 10

Which of the below are valid Isolations Levels?

choose 2

5 / 10

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

6 / 10

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

choose 3

7 / 10

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

Select more than 1 answer below:

8 / 10

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

9 / 10

Which of the below would best describe a dirty read?

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

Information about subtransactions is stored under?

2 / 10

Which 2 items does a Virtual XID consist of?

3 / 10

If a transaction aborts, all page changes are reverted(rolled back) in place?

4 / 10

Rows of TOAST tables are handled in such a way that they are never update?

5 / 10

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

6 / 10

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

7 / 10

indexes do not use row versioning?

8 / 10

Page free space can often become fragmented?

9 / 10

CLOG files are stored in which directory?

10 / 10

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

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