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 process first launched at server start?

2 / 20

What is the purpose of the postgres database?

3 / 20

What is the purpose of the template1 database?

4 / 20

A single Postgres Instance can server only one database?

5 / 20

Users should not modify the template0 database

6 / 20

The default Page size is 2k?

7 / 20

TOAST tables reside in a seperate schema?

8 / 20

What is a schema?

9 / 20

Files are logically split into pages?

10 / 20

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

11 / 20

What column in system catalogs servers as the Primary Key

12 / 20

Which fork contains the actual table data?

13 / 20

Which of below are predefined schemas?

choose 2

14 / 20

What is the purpose of the public schema?

15 / 20

What is the purpose of wal writer?

16 / 20

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

choose 3

17 / 20

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

18 / 20

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

19 / 20

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

20 / 20

Who is the Author of the Postgres 14 Internals book?

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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

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

2 / 10

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

3 / 10

What is the default Isolation Level?

4 / 10

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

5 / 10

non-repeatable read anomaly occurs when?

6 / 10

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

7 / 10

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

choose 3

8 / 10

Which of the below would best describe a dirty read?

9 / 10

Which of the below are valid Isolations Levels?

choose 2

10 / 10

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

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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

Information about subtransactions is stored under?

2 / 10

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

3 / 10

UPDATE can be regarded as which 2 separate operations?

4 / 10

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

5 / 10

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

6 / 10

Tuples can also be referred to as columns?

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

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