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

What 3 files/forks as a minimum make up a table on disk?

2 / 20

Each Database has its own System Catalog?

3 / 20

The information_schema schema provides information on Postgres release notes?

4 / 20

Tablespaces are used to define physical data layout?

5 / 20

What command is used to create the Postgres cluster?

6 / 20

What is the purpose of autovacuum?

7 / 20

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

8 / 20

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

9 / 20

What is the default standard size for a fork file?

10 / 20

Which 3 databases exist directly after cluster initialization?

choose 3 options

11 / 20

It is the postmasters job to listener for incoming connections?

12 / 20

What is another name for the postgres process?

13 / 20

A schema can belong to more than one database?

14 / 20

Which fork keeps track of available space within pages?

15 / 20

Each tablespaces can only be assigned for use by one database

16 / 20

TOAST tables reside in a seperate schema?

17 / 20

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

18 / 20

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

19 / 20

Which fork contains the actual table data?

20 / 20

Postgres by default has built in connection pooling abilities?

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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 are some of database features we can use to avoid a non repeatable read?

Select more than 1 answer below:

2 / 10

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

choose 3

3 / 10

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

4 / 10

non-repeatable read anomaly occurs when?

5 / 10

Which parameters sets the database default isolation level?

6 / 10

Which of the below would best describe a dirty read?

7 / 10

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

8 / 10

Which of the below are valid Isolations Levels?

choose 2

9 / 10

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

10 / 10

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

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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

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

2 / 10

indexes do not use row versioning?

3 / 10

status of a subtransaction is written into CLOG?

4 / 10

Each page has a layer that usually consists of?

choose 2

5 / 10

UPDATE can be regarded as which 2 separate operations?

6 / 10

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

7 / 10

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

8 / 10

Rows of TOAST tables are handled in such a way that they are never update?

9 / 10

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

10 / 10

index row headers like table row headers contain xmin and xmax fields?

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