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

1. What is the purpose of the public schema?

2 / 20

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

3 / 20

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

choose 2

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4. System Catalog tables begin with which prefix?

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5. What is the point of the pg_global tablespace?

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

Choose 2 option

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

8 / 20

8. Which of the below objects can be referred to as relations?

choose 3

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9. The default Page size is 2k?

10 / 20

10. What is the purpose of the postgres database?

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11. What is the name of the system catalog table for relations?

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12. To be able to restore data consistency, Postgres maintains

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13. Which 3 databases exist directly after cluster initialization?

choose 3 options

14 / 20

14. Postgres uses a thread based process model?

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15. Tablespaces are used to define physical data layout?

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16. What is the default standard size for a fork file?

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17. Each tablespaces can only be assigned for use by one database

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

19 / 20

19. Postgres by default has built in connection pooling abilities?

20 / 20

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

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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

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

Select more than 1 answer below:

2 / 10

2. Which parameters sets the database default isolation level?

3 / 10

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

4 / 10

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

5 / 10

5. What is the default Isolation Level?

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

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

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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

1. UPDATE can be regarded as which 2 separate operations?

2 / 10

2. CLOG files are stored in which directory?

3 / 10

3. When a row is created, its xmin value is set to the transaction ID of which command?

4 / 10

4. indexes do not use row versioning?

5 / 10

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

6 / 10

6. What does an Item Pointer contain?

choose 3

7 / 10

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

8 / 10

8. In Postgres, tables are often referred to as which of the below?

9 / 10

9. Which 2 items does a Virtual XID consist of?

10 / 10

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

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