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

Which fork contains the actual table data?

2 / 20

Which of below are predefined schemas?

choose 3

3 / 20

What is the purpose of the visibility map?

4 / 20

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

5 / 20

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

6 / 20

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

7 / 20

Who is the Author of the Postgres 14 Internals book?

8 / 20

pg_catalog schema is used to store system catalog tables?

9 / 20

What is the point of the pg_global tablespace?

10 / 20

What is the default standard size for a fork file?

11 / 20

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

Choose 2 option

12 / 20

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

13 / 20

What is another name for the postgres process?

14 / 20

What is the process first launched at server start?

15 / 20

What column in system catalogs servers as the Primary Key

16 / 20

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

17 / 20

Which fork is specific for unlogged tables?

18 / 20

Users should not modify the template0 database

19 / 20

What command is used to create the Postgres cluster?

20 / 20

Files are logically split into pages?

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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

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

2 / 10

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

3 / 10

Which of the below would best describe a dirty read?

4 / 10

What is the default Isolation Level?

5 / 10

The SQL standard specifies three isolation levels?

6 / 10

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

7 / 10

Which parameters sets the database default isolation level?

8 / 10

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

9 / 10

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

choose 3

10 / 10

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

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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

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

3 / 10

Which of the below are true about a Pages Item Pointer?

4 / 10

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

5 / 10

CLOG contains how many bits for each transaction?

6 / 10

status of a subtransaction is written into CLOG?

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

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