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 point of the pg_global tablespace?

3 / 20

Postgres uses a thread based process model?

4 / 20

A single Postgres Instance can server only one database?

5 / 20

A schema can belong to more than one database?

6 / 20

Users should not modify the template0 database

7 / 20

Files are logically split into pages?

8 / 20

What command is used to create the Postgres cluster?

9 / 20

To be able to restore data consistency, Postgres maintains

10 / 20

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

11 / 20

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

12 / 20

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

choose 3

13 / 20

Which fork contains the actual table data?

14 / 20

What column in system catalogs servers as the Primary Key

15 / 20

The default Page size is 2k?

16 / 20

Which 3 databases exist directly after cluster initialization?

choose 3 options

17 / 20

What is the purpose of the postgres database?

18 / 20

What is the purpose of the template1 database?

19 / 20

Which fork keeps track of available space within pages?

20 / 20

What is the purpose of autovacuum?

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

2 / 10

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

3 / 10

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

4 / 10

Which of the below are valid Isolations Levels?

choose 2

5 / 10

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

6 / 10

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

choose 3

7 / 10

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

8 / 10

The SQL standard specifies three isolation levels?

9 / 10

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

10 / 10

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

Your score is

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

CLOG files are stored in which directory?

3 / 10

Indexes values also support multi versioning with several versions of an index value existing at any point in time?

4 / 10

What does an Item Pointer contain?

choose 3

5 / 10

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

6 / 10

Each page has a layer that usually consists of?

choose 2

7 / 10

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

8 / 10

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

9 / 10

Which 2 items does a Virtual XID consist of?

10 / 10

Tuples can also be referred to as columns?

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