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

Which fork is specific for unlogged tables?

2 / 20

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

3 / 20

Postgres uses a thread based process model?

4 / 20

What is the purpose of the public schema?

5 / 20

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

6 / 20

What is another name for the postgres process?

7 / 20

The default Page size is 2k?

8 / 20

Which of below are predefined schemas?

choose 3

9 / 20

A schema can belong to more than one database?

10 / 20

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

11 / 20

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

12 / 20

Postgres by default has built in connection pooling abilities?

13 / 20

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

choose 2

14 / 20

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

15 / 20

The information_schema schema provides information on Postgres release notes?

16 / 20

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

17 / 20

Which fork keeps track of available space within pages?

18 / 20

Which fork contains the actual table data?

19 / 20

Tablespaces are used to define physical data layout?

20 / 20

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

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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

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

choose 3

2 / 10

Which of the below are valid Isolations Levels?

choose 2

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

non-repeatable read anomaly occurs when?

7 / 10

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

8 / 10

What is the default Isolation Level?

9 / 10

Which of the below would best describe a dirty read?

10 / 10

Which parameters sets the database default isolation level?

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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

The page header is located in the highest address?

3 / 10

Page free space can often become fragmented?

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

indexes do not use row versioning?

8 / 10

Each page has a layer that usually consists of?

choose 2

9 / 10

status of a subtransaction is written into CLOG?

10 / 10

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

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