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 server spawns a new backend session for each connection?

2 / 20

Which fork keeps track of available space within pages?

3 / 20

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

4 / 20

A schema can belong to more than one database?

5 / 20

What is a schema?

6 / 20

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

7 / 20

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

8 / 20

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

9 / 20

What is the point of the pg_global tablespace?

10 / 20

What is the purpose of the template1 database?

11 / 20

What is the purpose of the public schema?

12 / 20

Who is the Author of the Postgres 14 Internals book?

13 / 20

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

14 / 20

What is another name for the postgres process?

15 / 20

The default Page size is 2k?

16 / 20

What is the default standard size for a fork file?

17 / 20

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

18 / 20

Which 3 databases exist directly after cluster initialization?

choose 3 options

19 / 20

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

20 / 20

pg_catalog schema is used to store system catalog tables?

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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

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

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

Which of the below are valid Isolations Levels?

choose 2

6 / 10

The SQL standard specifies three isolation levels?

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

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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

CLOG contains how many bits for each transaction?

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

Information about subtransactions is stored under?

6 / 10

Page free space can often become fragmented?

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

What does an Item Pointer contain?

choose 3

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