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

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

2 / 20

What is the process first launched at server start?

3 / 20

What is another name for the postgres process?

4 / 20

The default Page size is 2k?

5 / 20

What is the purpose of the postgres database?

6 / 20

What column in system catalogs servers as the Primary Key

7 / 20

What is the default standard size for a fork file?

8 / 20

Who is the Author of the Postgres 14 Internals book?

9 / 20

To be able to restore data consistency, Postgres maintains

10 / 20

Tablespaces are used to define physical data layout?

11 / 20

Postgres uses a thread based process model?

12 / 20

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

13 / 20

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

14 / 20

Each tablespaces can only be assigned for use by one database

15 / 20

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

16 / 20

The information_schema schema provides information on Postgres release notes?

17 / 20

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

18 / 20

System Catalog tables begin with which prefix?

19 / 20

Postgres by default has built in connection pooling abilities?

20 / 20

TOAST tables reside in a seperate schema?

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

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

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

choose 3

6 / 10

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

7 / 10

non-repeatable read anomaly occurs when?

8 / 10

Which of the below are valid Isolations Levels?

choose 2

9 / 10

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

Select more than 1 answer below:

10 / 10

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

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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

CLOG Pages are never cached in memory?

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

indexes do not use row versioning?

8 / 10

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

9 / 10

UPDATE can be regarded as which 2 separate operations?

10 / 10

a transaction containing a savepoint is will still be considered as only a single transaction?

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