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

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

2 / 20

What is the purpose of the public schema?

3 / 20

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

4 / 20

Postgres server spawns a new backend session for each connection?

5 / 20

How does Postgres know which schema to use if not specified?

6 / 20

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

7 / 20

Which 3 databases exist directly after cluster initialization?

choose 3 options

8 / 20

The default Page size is 2k?

9 / 20

What is the purpose of the template0 database?

10 / 20

Which fork keeps track of available space within pages?

11 / 20

Who is the Author of the Postgres 14 Internals book?

12 / 20

Which fork contains the actual table data?

13 / 20

System Catalog tables begin with which prefix?

14 / 20

Which of below are predefined schemas?

choose 2

15 / 20

What is the name of the directory that contains the files related to the Postgres cluster?

16 / 20

The information_schema schema provides information on Postgres release notes?

17 / 20

What is the purpose of autovacuum?

18 / 20

What command is used to create the Postgres cluster?

19 / 20

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

choose 3

20 / 20

What is the process first launched at server start?

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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 parameters sets the database default isolation level?

2 / 10

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

3 / 10

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

4 / 10

Which of the below are valid Isolations Levels?

choose 2

5 / 10

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

6 / 10

What is the default Isolation Level?

7 / 10

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

8 / 10

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

9 / 10

Which of the below would best describe a dirty read?

10 / 10

non-repeatable read anomaly occurs when?

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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

Each page has a layer that usually consists of?

choose 2

2 / 10

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

3 / 10

CLOG contains how many bits for each transaction?

4 / 10

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

5 / 10

To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

6 / 10

CLOG files are stored in which directory?

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

Information about subtransactions is stored under?

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