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

System Catalog tables begin with which prefix?

2 / 20

Which fork keeps track of available space within pages?

3 / 20

What is the purpose of the template0 database?

4 / 20

Tablespaces can be used to segregate data based on performance needs?

5 / 20

What is the purpose of the public schema?

6 / 20

Which of below are predefined schemas?

choose 2

7 / 20

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

8 / 20

Which fork is specific for unlogged tables?

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

Each tablespaces can only be assigned for use by one database

12 / 20

Users should not modify the template0 database

13 / 20

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

Choose 2 option

14 / 20

A single Postgres Instance can server only one database?

15 / 20

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

16 / 20

What is the default standard size for a fork file?

17 / 20

Which fork contains the actual table data?

18 / 20

What is the purpose of the postgres database?

19 / 20

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

20 / 20

What is the point of the pg_global tablespace?

Your score is

0%

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

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

2 / 10

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

3 / 10

Which parameters sets the database default isolation level?

4 / 10

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

Select more than 1 answer below:

5 / 10

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

6 / 10

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

7 / 10

Which of the below are valid Isolations Levels?

choose 2

8 / 10

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

9 / 10

non-repeatable read anomaly occurs when?

10 / 10

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

choose 3

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

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

2 / 10

A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

3 / 10

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

4 / 10

CLOG contains how many bits for each transaction?

5 / 10

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

6 / 10

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

7 / 10

Information about subtransactions is stored under?

8 / 10

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

9 / 10

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

10 / 10

Which 2 of the below represent transaction IDs used for row versioning?

Your score is

0%