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 purpose of the public schema?

2 / 20

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

3 / 20

Postgres uses a thread based process model?

4 / 20

What is the name of the directory that contains the files related to the Postgres cluster?

5 / 20

System Catalog tables begin with which prefix?

6 / 20

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

choose 3

7 / 20

What is the default standard size for a fork file?

8 / 20

Each Database has its own System Catalog?

9 / 20

It is the postmasters job to listener for incoming connections?

10 / 20

Tablespaces are used to define physical data layout?

11 / 20

If we create a new tablespace which directory will symbolic links be created from?

12 / 20

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

13 / 20

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

14 / 20

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

15 / 20

Who is the Author of the Postgres 14 Internals book?

16 / 20

Which fork keeps track of available space within pages?

17 / 20

Files are logically split into pages?

18 / 20

pg_catalog schema is used to store system catalog tables?

19 / 20

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

20 / 20

A schema can belong to more than one database?

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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

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

2 / 10

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

3 / 10

Which parameters sets the database default isolation level?

4 / 10

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

choose 3

5 / 10

Which of the below are valid Isolations Levels?

choose 2

6 / 10

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

7 / 10

non-repeatable read anomaly occurs when?

8 / 10

A phantom read anomaly occurs when?

9 / 10

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

10 / 10

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

Your score is

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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

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

2 / 10

Tuples can also be referred to as columns?

3 / 10

CLOG files are stored in which directory?

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

Each page has a layer that usually consists of?

choose 2

9 / 10

CLOG contains how many bits for each transaction?

10 / 10

status of a subtransaction is written into CLOG?

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