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 point of the pg_global tablespace?

2 / 20

2. Which of the below objects can be referred to as relations?

choose 3

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3. Which 3 databases exist directly after cluster initialization?

choose 3 options

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

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5. What is the purpose of the public schema?

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6. Files are logically split into pages?

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

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

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9. What is the purpose of the template0 database?

10 / 20

10. Postgres uses a thread based process model?

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11. What is the purpose of the postgres database?

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

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

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

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15. Each Database has its own System Catalog?

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

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17. Tablespaces are used to define physical data layout?

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

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19. System Catalog tables begin with which prefix?

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20. Which of below are predefined schemas?

choose 3

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

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

5 / 10

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

6 / 10

6. What is the default Isolation Level?

7 / 10

7. Which of the below are valid Isolations Levels?

choose 2

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. The SQL standard specifies three isolation levels?

10 / 10

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

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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. psql provides a special mode that allows you to continue a transaction after a failure?

2 / 10

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

3 / 10

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

4 / 10

4. status of a subtransaction is written into CLOG?

5 / 10

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

6 / 10

6. CLOG contains how many bits for each transaction?

7 / 10

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

8 / 10

8. Page header sizes can be easily displayed using the <choose from answers> extension

9 / 10

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

10 / 10

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

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