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

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

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3. What is the purpose of wal writer?

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4. What is the purpose of the postgres database?

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5. The information_schema schema provides information on Postgres release notes?

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6. Which 3 databases exist directly after cluster initialization?

choose 3 options

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

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8. Which fork keeps track of available space within pages?

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

10 / 20

10. What is the purpose of the public schema?

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11. What is another name for the postgres process?

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12. Which of below are predefined schemas?

choose 3

13 / 20

13. What is the point of the pg_global tablespace?

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

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

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

17 / 20

17. Files are logically split into pages?

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18. TOAST tables reside in a seperate schema?

19 / 20

19. What is the process first launched at server start?

20 / 20

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

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

2 / 10

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

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

Select more than 1 answer below:

4 / 10

4. What is the default Isolation Level?

5 / 10

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

choose 3

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

7 / 10

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

8 / 10

8. Which parameters sets the database default isolation level?

9 / 10

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

10 / 10

10. The SQL standard specifies three 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. What does an Item Pointer contain?

choose 3

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

5. indexes do not use row versioning?

6 / 10

6. status of a subtransaction is written into CLOG?

7 / 10

7. When a transaction is committed Postgres uses a special <replace with answer> structure?

8 / 10

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

9 / 10

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

10 / 10

10. The page header is located in the highest address?

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