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. The default Page size is 2k?

3 / 20

3. Which of below are predefined schemas?

choose 2

4 / 20

4. What is a schema?

5 / 20

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

6 / 20

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

7 / 20

7. What is another name for the postgres process?

8 / 20

8. What is the name of the mechanism used to store a row bigger than a page size?

9 / 20

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

choose 2

10 / 20

10. What is the purpose of wal writer?

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11. Files are logically split into pages?

12 / 20

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

13 / 20

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

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

15 / 20

15. What is the purpose of autovacuum?

16 / 20

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

17 / 20

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

18 / 20

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

19 / 20

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

20 / 20

20. Postgres uses a thread based process model?

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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 statements will start a transaction as Read Repeatable?

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

5 / 10

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

6 / 10

6. non-repeatable read anomaly occurs when?

7 / 10

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

8 / 10

8. The SQL standard specifies three isolation levels?

9 / 10

9. Which parameters sets the database default isolation level?

10 / 10

10. What is the default Isolation Level?

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

2 / 10

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

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

5 / 10

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

6 / 10

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

7 / 10

7. Tuples can also be referred to as columns?

8 / 10

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

9 / 10

9. CLOG files are stored in which directory?

10 / 10

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

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