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

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

2 / 20

What is the purpose of autovacuum?

3 / 20

The information_schema schema provides information on Postgres release notes?

4 / 20

What is the purpose of the visibility map?

5 / 20

What is the purpose of wal writer?

6 / 20

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

choose 2

7 / 20

What is the purpose of the postgres database?

8 / 20

Which fork contains the actual table data?

9 / 20

TOAST tables reside in a seperate schema?

10 / 20

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

11 / 20

Which of below are predefined schemas?

choose 2

12 / 20

What is the default standard size for a fork file?

13 / 20

Which of below are predefined schemas?

choose 3

14 / 20

Postgres server spawns a new backend session for each connection?

15 / 20

Users should not modify the template0 database

16 / 20

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

17 / 20

Files are logically split into pages?

18 / 20

Which fork keeps track of available space within pages?

19 / 20

What is the process first launched at server start?

20 / 20

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

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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

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

2 / 10

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

3 / 10

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

4 / 10

non-repeatable read anomaly occurs when?

5 / 10

The SQL standard specifies three isolation levels?

6 / 10

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

7 / 10

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

8 / 10

Which of the below are valid Isolations Levels?

choose 2

9 / 10

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

10 / 10

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

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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

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

2 / 10

UPDATE can be regarded as which 2 separate operations?

3 / 10

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

4 / 10

Page free space can often become fragmented?

5 / 10

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

6 / 10

Indexes values also support multi versioning with several versions of an index value existing at any point in time?

7 / 10

CLOG contains how many bits for each transaction?

8 / 10

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

9 / 10

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

10 / 10

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

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