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

Postgres by default has built in connection pooling abilities?

2 / 20

Files are logically split into pages?

3 / 20

The default Page size is 2k?

4 / 20

What is the name of the mechanism used to store a row bigger than a page size?

5 / 20

Users should not modify the template0 database

6 / 20

What is a schema?

7 / 20

What command is used to create the Postgres cluster?

8 / 20

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

9 / 20

To be able to restore data consistency, Postgres maintains

10 / 20

What is the default standard size for a fork file?

11 / 20

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

12 / 20

Postgres uses a thread based process model?

13 / 20

What is the name of the 2 default tablespaces created after initialization?

choose 2

14 / 20

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

15 / 20

Who is the Author of the Postgres 14 Internals book?

16 / 20

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

17 / 20

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

18 / 20

A schema can belong to more than one database?

19 / 20

Which fork keeps track of available space within pages?

20 / 20

What is another name for the postgres process?

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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

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

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

non-repeatable read anomaly occurs when?

7 / 10

Which of the below are valid Isolations Levels?

choose 2

8 / 10

Which of the below would best describe a dirty read?

9 / 10

The SQL standard specifies three isolation levels?

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

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

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

UPDATE can be regarded as which 2 separate operations?

6 / 10

Page free space can often become fragmented?

7 / 10

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

8 / 10

When a row is created, its xmin value is set to the transaction ID of which command?

9 / 10

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

10 / 10

CLOG files are stored in which directory?

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