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. Postgres uses a thread based process model?

2 / 20

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

3 / 20

3. What is the purpose of the template1 database?

4 / 20

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

choose 2

5 / 20

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

6 / 20

6. What is the purpose of the public schema?

7 / 20

7. Which 3 databases exist directly after cluster initialization?

choose 3 options

8 / 20

8. The default Page size is 2k?

9 / 20

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

10 / 20

10. Files are logically split into pages?

11 / 20

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

12 / 20

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

Choose 2 option

13 / 20

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

14 / 20

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

15 / 20

15. Which fork is specific for unlogged tables?

16 / 20

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

17 / 20

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

18 / 20

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

19 / 20

19. What is the purpose of the visibility map?

20 / 20

20. What is the purpose of the postgres database?

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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 of the below are valid Isolations Levels?

choose 2

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

6. non-repeatable read anomaly occurs when?

7 / 10

7. Which parameters sets the database default isolation level?

8 / 10

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

9 / 10

9. The SQL standard specifies three isolation levels?

10 / 10

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

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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. Information about subtransactions is stored under?

2 / 10

2. CLOG Pages are never cached in memory?

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

6. What does an Item Pointer contain?

choose 3

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

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