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.

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

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

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3. What is the purpose of the public schema?

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4. TOAST tables reside in a seperate schema?

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5. What is a schema?

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

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7. Who is the Author of the Postgres 14 Internals book?

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

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

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10. Each Database has its own System Catalog?

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

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

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13. Which of below are predefined schemas?

choose 2

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14. What is another name for the postgres process?

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

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

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

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18. Users should not modify the template0 database

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19. What is the purpose of the postgres database?

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20. Which 3 databases exist directly after cluster initialization?

choose 3 options

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0%

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

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2. A phantom read anomaly occurs when?

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

choose 3

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

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

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

Select more than 1 answer below:

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

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8. Which of the below are valid Isolations Levels?

choose 2

9 / 10

9. What is the default Isolation Level?

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

Your score is

0%

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 Special Space is located at the start of the page with highest address

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

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

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4. indexes do not use row versioning?

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5. status of a subtransaction is written into CLOG?

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

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7. Which function can we use to find the current transaction ID?

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

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

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10. Each page has a layer that usually consists of?

choose 2

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0%