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 point of the pg_global tablespace?

2 / 20

Postgres server spawns a new backend session for each connection?

3 / 20

Each Database has its own System Catalog?

4 / 20

Which of below are predefined schemas?

choose 3

5 / 20

Who is the Author of the Postgres 14 Internals book?

6 / 20

How does Postgres know which schema to use if not specified?

7 / 20

Each tablespaces can only be assigned for use by one database

8 / 20

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

9 / 20

How many files or forks on disk will a 10Mb table with no index have?

10 / 20

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

11 / 20

When PostgreSQL is running what can it be referred to as?

Choose 2 option

12 / 20

What is the process first launched at server start?

13 / 20

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

choose 3

14 / 20

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

15 / 20

It is the postmasters job to listener for incoming connections?

16 / 20

Which fork contains the actual table data?

17 / 20

Tablespaces can be used to segregate data based on performance needs?

18 / 20

TOAST tables reside in a seperate schema?

19 / 20

What is the purpose of autovacuum?

20 / 20

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

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

Select more than 1 answer below:

2 / 10

Which of the below would best describe a dirty read?

3 / 10

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

4 / 10

Which of the below are valid Isolations Levels?

choose 2

5 / 10

Which parameters sets the database default isolation level?

6 / 10

The SQL standard specifies three isolation levels?

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

A phantom read anomaly occurs when?

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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 of the below are true about a Pages Item Pointer?

2 / 10

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

3 / 10

Page free space can often become fragmented?

4 / 10

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

5 / 10

Which 2 of the below represent transaction IDs used for row versioning?

6 / 10

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

7 / 10

CLOG files are stored in which directory?

8 / 10

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

9 / 10

To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

10 / 10

What does an Item Pointer contain?

choose 3

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