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 of below are predefined schemas?

choose 3

2 / 20

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

3 / 20

What is a schema?

4 / 20

What is the point of the pg_global tablespace?

5 / 20

A schema can belong to more than one database?

6 / 20

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

7 / 20

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

8 / 20

What is another name for the postgres process?

9 / 20

Which 3 databases exist directly after cluster initialization?

choose 3 options

10 / 20

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

11 / 20

The default Page size is 2k?

12 / 20

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

13 / 20

pg_catalog schema is used to store system catalog tables?

14 / 20

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

15 / 20

When PostgreSQL is running what can it be referred to as?

Choose 2 option

16 / 20

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

17 / 20

Which fork keeps track of available space within pages?

18 / 20

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

19 / 20

Files are logically split into pages?

20 / 20

What is the purpose of the postgres database?

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0%

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 of the below would best describe a dirty read?

2 / 10

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

3 / 10

The SQL standard specifies three isolation levels?

4 / 10

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

5 / 10

Which parameters sets the database default isolation level?

6 / 10

What is the default Isolation Level?

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

non-repeatable read anomaly occurs when?

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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

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

2 / 10

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

3 / 10

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

4 / 10

When a transaction is committed Postgres uses a special <replace with answer> structure?

5 / 10

Which 2 items does a Virtual XID consist of?

6 / 10

UPDATE can be regarded as which 2 separate operations?

7 / 10

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

8 / 10

Each page has a layer that usually consists of?

choose 2

9 / 10

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

10 / 10

The page Special Space is located at the start of the page with highest address

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