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

Choose 2 option

2 / 20

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

choose 2

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

4 / 20

4. TOAST tables reside in a seperate schema?

5 / 20

5. What is another name for the postgres process?

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6. To be able to restore data consistency, Postgres maintains

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

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8. A schema can belong to more than one database?

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

10 / 20

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

11 / 20

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

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

13 / 20

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

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

15 / 20

15. What is the purpose of autovacuum?

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

17 / 20

17. Each Database has its own System Catalog?

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

19 / 20

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

20 / 20

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

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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. The SQL standard specifies three isolation levels?

2 / 10

2. A phantom read anomaly occurs when?

3 / 10

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

4 / 10

4. Which of the below would best describe a dirty read?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

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

9 / 10

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

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

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

5. Which 2 of the below represent transaction IDs used for row versioning?

6 / 10

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

7 / 10

7. CLOG contains how many bits for each transaction?

8 / 10

8. CLOG Pages are never cached in memory?

9 / 10

9. Tuples can also be referred to as columns?

10 / 10

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

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