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

Each Database has its own System Catalog?

2 / 20

Users should not modify the template0 database

3 / 20

The information_schema schema provides information on Postgres release notes?

4 / 20

System Catalog tables begin with which prefix?

5 / 20

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

choose 3

6 / 20

Postgres uses a thread based process model?

7 / 20

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

8 / 20

What is the name of the system catalog table for relations?

9 / 20

To be able to restore data consistency, Postgres maintains

10 / 20

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

11 / 20

Which fork contains the actual table data?

12 / 20

What is the purpose of the public schema?

13 / 20

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

choose 2

14 / 20

It is the postmasters job to listener for incoming connections?

15 / 20

What is the name of the catalog that stores metadata for all cluster objects?

16 / 20

What is the purpose of the postgres database?

17 / 20

Files are logically split into pages?

18 / 20

Postgres server spawns a new backend session for each connection?

19 / 20

What is the purpose of the visibility map?

20 / 20

Which fork keeps track of available space within pages?

Your score is

0%

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

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

2 / 10

Which of the below are valid Isolations Levels?

choose 2

3 / 10

What is the default Isolation Level?

4 / 10

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

5 / 10

The SQL standard specifies three isolation levels?

6 / 10

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

7 / 10

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

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 of the below would best describe a dirty read?

10 / 10

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

Your score is

0%

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

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

3 / 10

The page header stores checksum and the sizes of the other parts of the page?

4 / 10

What does an Item Pointer contain?

choose 3

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

Information about subtransactions is stored under?

9 / 10

Page free space can often become fragmented?

10 / 10

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

Your score is

0%