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

pg_catalog schema is used to store system catalog tables?

2 / 20

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

3 / 20

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

4 / 20

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

5 / 20

Who is the Author of the Postgres 14 Internals book?

6 / 20

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

7 / 20

What is the process first launched at server start?

8 / 20

Users should not modify the template0 database

9 / 20

Which fork contains the actual table data?

10 / 20

What column in system catalogs servers as the Primary Key

11 / 20

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

12 / 20

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

13 / 20

What is the purpose of autovacuum?

14 / 20

Tablespaces are used to define physical data layout?

15 / 20

To understand each other, a client and a server must use one and the same interfacing protocol?

16 / 20

Postgres uses a thread based process model?

17 / 20

A schema can belong to more than one database?

18 / 20

The information_schema schema provides information on Postgres release notes?

19 / 20

What is another name for the postgres process?

20 / 20

Which of below are predefined schemas?

choose 2

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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

non-repeatable read anomaly occurs when?

2 / 10

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

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

6 / 10

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

7 / 10

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

Select more than 1 answer below:

8 / 10

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

9 / 10

What is the default Isolation Level?

10 / 10

The SQL standard specifies three 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

at any one time Postgres can have several versions of a row?

2 / 10

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

3 / 10

CLOG files are stored in which directory?

4 / 10

Page free space can often become fragmented?

5 / 10

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

6 / 10

When a transaction is committed Postgres uses a special <replace with answer> structure?

7 / 10

virtual IDs exist only in PGDATA/pg_vxid when not cached?

8 / 10

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

9 / 10

Tuples can also be referred to as columns?

10 / 10

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

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