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 template1 database?

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

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3. What is the purpose of the visibility map?

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4. What is the purpose of the template0 database?

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5. TOAST tables reside in a seperate schema?

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

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7. The information_schema schema provides information on Postgres release notes?

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

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

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10. What is the purpose of the public schema?

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

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12. It is the postmasters job to listener for incoming connections?

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

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

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

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16. Which fork contains the actual table data?

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

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

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

20 / 20

20. Which 3 databases exist directly after cluster initialization?

choose 3 options

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

2 / 10

2. The SQL standard specifies three isolation levels?

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

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4. Which of the below are valid Isolations Levels?

choose 2

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

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

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

8 / 10

8. non-repeatable read anomaly occurs when?

9 / 10

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

10 / 10

10. Which parameters sets the database default isolation level?

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

2 / 10

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

3 / 10

3. The page header is located in the highest address?

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4. If a transaction is read only which kind of Transaction ID is it allocated?

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

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

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

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8. CLOG contains how many bits for each transaction?

9 / 10

9. CLOG files are stored in which directory?

10 / 10

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

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