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 column in system catalogs servers as the Primary Key

3 / 20

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

4 / 20

4. Which of below are predefined schemas?

choose 3

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

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

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7. A single Postgres Instance can server only one database?

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

choose 3

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

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10. What command is used to create the Postgres cluster?

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11. Tablespaces are used to define physical data layout?

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12. Postgres server spawns a new backend session for each connection?

13 / 20

13. What is the purpose of autovacuum?

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

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15. Which of below are predefined schemas?

choose 2

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16. System Catalog tables begin with which prefix?

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17. What is the purpose of wal writer?

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

19 / 20

19. TOAST tables reside in a seperate schema?

20 / 20

20. Which fork contains the actual table data?

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

2 / 10

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

3 / 10

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

choose 3

4 / 10

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

5 / 10

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

Select more than 1 answer below:

6 / 10

6. What is the default Isolation Level?

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

8 / 10

8. The SQL standard specifies three isolation levels?

9 / 10

9. A phantom read anomaly occurs when?

10 / 10

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

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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. Which 2 items does a Virtual XID consist of?

2 / 10

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

3 / 10

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

4 / 10

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

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. The page header stores checksum and the sizes of the other parts of the page?

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