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 name of the 2 default tablespaces created after initialization?

choose 2

2 / 20

What is the point of the pg_global tablespace?

3 / 20

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

4 / 20

Which fork contains the actual table data?

5 / 20

What is the purpose of autovacuum?

6 / 20

Who is the Author of the Postgres 14 Internals book?

7 / 20

System Catalog tables begin with which prefix?

8 / 20

What is the purpose of the template1 database?

9 / 20

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

10 / 20

pg_catalog schema is used to store system catalog tables?

11 / 20

Users should not modify the template0 database

12 / 20

What is the purpose of the public schema?

13 / 20

Postgres by default has built in connection pooling abilities?

14 / 20

Which of below are predefined schemas?

choose 2

15 / 20

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

16 / 20

What is a schema?

17 / 20

What is the default standard size for a fork file?

18 / 20

A Postgres cluster consists of 2 or more physical servers accessing one Postgres Instance?

19 / 20

A schema can belong to more than one database?

20 / 20

Which fork keeps track of available space within 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

What is the default Isolation Level?

2 / 10

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

3 / 10

A phantom read anomaly occurs when?

4 / 10

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

5 / 10

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

6 / 10

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

choose 3

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

Select more than 1 answer below:

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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

Postgres table physical data files are always cross compatible across platforms?

2 / 10

If a transaction is read only which kind of Transaction ID is it allocated?

3 / 10

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

4 / 10

Each page has a layer that usually consists of?

choose 2

5 / 10

If a transaction aborts, all page changes are reverted(rolled back) in place?

6 / 10

The page header is located in the highest address?

7 / 10

Tuples can also be referred to as columns?

8 / 10

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

9 / 10

What does an Item Pointer contain?

choose 3

10 / 10

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

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