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

What is another name for the postgres process?

3 / 20

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

4 / 20

It is the postmasters job to listener for incoming connections?

5 / 20

Which fork contains the actual table data?

6 / 20

What is the purpose of autovacuum?

7 / 20

What column in system catalogs servers as the Primary Key

8 / 20

System Catalog tables begin with which prefix?

9 / 20

Files are logically split into pages?

10 / 20

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

11 / 20

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

12 / 20

To be able to restore data consistency, Postgres maintains

13 / 20

What command is used to create the Postgres cluster?

14 / 20

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

15 / 20

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

16 / 20

What is the purpose of the template1 database?

17 / 20

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

Choose 2 option

18 / 20

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

19 / 20

TOAST tables reside in a seperate schema?

20 / 20

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

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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

The SQL standard specifies three isolation levels?

2 / 10

A phantom read anomaly occurs when?

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

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

choose 3

7 / 10

Which of the below would best describe a dirty read?

8 / 10

Which parameters sets the database default isolation level?

9 / 10

Which of the below are valid Isolations Levels?

choose 2

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

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

2 / 10

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

3 / 10

Page free space can often become fragmented?

4 / 10

What does an Item Pointer contain?

choose 3

5 / 10

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

6 / 10

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

7 / 10

Tuples can also be referred to as columns?

8 / 10

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

9 / 10

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

10 / 10

The page header is located in the highest address?

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