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. How many rows in a page does Postgres aim to have before considering TOAST?

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2. What is the purpose of the template0 database?

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3. What is the point of the pg_global tablespace?

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

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5. pg_catalog schema is used to store system catalog tables?

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

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7. What is the purpose of autovacuum?

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

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

10 / 20

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

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

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

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

choose 2

14 / 20

14. Which of below are predefined schemas?

choose 2

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

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16. What column in system catalogs servers as the Primary Key

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

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18. Which fork is specific for unlogged tables?

19 / 20

19. What is the purpose of the postgres database?

20 / 20

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

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

2 / 10

2. What is the default Isolation Level?

3 / 10

3. A phantom read anomaly occurs when?

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4. Which of the below are valid Isolations Levels?

choose 2

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

Select more than 1 answer below:

9 / 10

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

10 / 10

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

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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. status of a subtransaction is written into CLOG?

2 / 10

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

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3. CLOG Pages are never cached in memory?

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4. CLOG files are stored in which directory?

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

9. indexes do not use row versioning?

10 / 10

10. What does an Item Pointer contain?

choose 3

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