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 is specific for unlogged tables?

2 / 20

What is another name for the postgres process?

3 / 20

A single Postgres Instance can server only one database?

4 / 20

Which 3 databases exist directly after cluster initialization?

choose 3 options

5 / 20

Tablespaces are used to define physical data layout?

6 / 20

The information_schema schema provides information on Postgres release notes?

7 / 20

TOAST tables reside in a seperate schema?

8 / 20

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

9 / 20

The pg_default tablespace should never be used to create user tables?

10 / 20

What is the point of the pg_global tablespace?

11 / 20

Which fork contains the actual table data?

12 / 20

What is the purpose of the public schema?

13 / 20

Which fork keeps track of available space within pages?

14 / 20

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

15 / 20

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

Choose 2 option

16 / 20

Files are logically split into pages?

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

Postgres uses a thread based process model?

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 is the default Isolation Level?

2 / 10

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

3 / 10

Which of the below are valid Isolations Levels?

choose 2

4 / 10

non-repeatable read anomaly occurs when?

5 / 10

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

choose 3

6 / 10

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

7 / 10

A phantom read anomaly occurs when?

8 / 10

Which of the below would best describe a dirty read?

9 / 10

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

10 / 10

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

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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

Rows of TOAST tables are handled in such a way that they are never update?

2 / 10

Information about subtransactions is stored under?

3 / 10

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

4 / 10

Page header sizes can be easily displayed using the <choose from answers> extension

5 / 10

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

6 / 10

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

7 / 10

indexes do not use row versioning?

8 / 10

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

9 / 10

status of a subtransaction is written into CLOG?

10 / 10

Each page has a layer that usually consists of?

choose 2

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