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

Each tablespaces can only be assigned for use by one database

2 / 20

pg_catalog schema is used to store system catalog tables?

3 / 20

What column in system catalogs servers as the Primary Key

4 / 20

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

5 / 20

Which 3 databases exist directly after cluster initialization?

choose 3 options

6 / 20

It is the postmasters job to listener for incoming connections?

7 / 20

What is the purpose of the visibility map?

8 / 20

Postgres server spawns a new backend session for each connection?

9 / 20

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

10 / 20

What command is used to create the Postgres cluster?

11 / 20

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

choose 2

12 / 20

Files are logically split into pages?

13 / 20

Which fork contains the actual table data?

14 / 20

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

15 / 20

Each Database has its own System Catalog?

16 / 20

Which fork is specific for unlogged tables?

17 / 20

The default Page size is 2k?

18 / 20

System Catalog tables begin with which prefix?

19 / 20

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

choose 3

20 / 20

Users should not modify the template0 database

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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

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

2 / 10

Which of the below would best describe a dirty read?

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

The SQL standard specifies three isolation levels?

7 / 10

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

8 / 10

non-repeatable read anomaly occurs when?

9 / 10

What is the default Isolation Level?

10 / 10

Which of the below are valid Isolations Levels?

choose 2

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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

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

2 / 10

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

3 / 10

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

4 / 10

Page free space can often become fragmented?

5 / 10

Which 2 items does a Virtual XID consist of?

6 / 10

The page header stores checksum and the sizes of the other parts of the page?

7 / 10

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

8 / 10

The page header is located in the highest address?

9 / 10

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

10 / 10

a transaction containing a savepoint is will still be considered as only a single transaction?

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