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 3 databases exist directly after cluster initialization?

choose 3 options

2 / 20

Which fork keeps track of available space within pages?

3 / 20

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

4 / 20

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

Choose 2 option

5 / 20

Postgres server spawns a new backend session for each connection?

6 / 20

Users should not modify the template0 database

7 / 20

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

8 / 20

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

9 / 20

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

10 / 20

Tablespaces are used to define physical data layout?

11 / 20

Which fork contains the actual table data?

12 / 20

It is the postmasters job to listener for incoming connections?

13 / 20

Which fork is specific for unlogged tables?

14 / 20

What is another name for the postgres process?

15 / 20

What is the default standard size for a fork file?

16 / 20

What is the purpose of the visibility map?

17 / 20

TOAST tables reside in a seperate schema?

18 / 20

Which of below are predefined schemas?

choose 2

19 / 20

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

20 / 20

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

choose 2

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

2 / 10

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

3 / 10

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

4 / 10

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

Select more than 1 answer below:

5 / 10

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

6 / 10

Which of the below are valid Isolations Levels?

choose 2

7 / 10

What is the default Isolation Level?

8 / 10

A phantom read anomaly occurs when?

9 / 10

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

10 / 10

The SQL standard specifies three isolation levels?

Your score is

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

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

2 / 10

CLOG Pages are never cached in memory?

3 / 10

Which function can we use to find the current transaction ID?

4 / 10

CLOG contains how many bits for each transaction?

5 / 10

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

6 / 10

What does an Item Pointer contain?

choose 3

7 / 10

virtual IDs exist only in PGDATA/pg_vxid when not cached?

8 / 10

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

9 / 10

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

10 / 10

The page header is located in the highest address?

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