Postgres Quiz Archive

You have 200 seconds to answer 20 Random questions so think fast!

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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. Each Database has its own System Catalog?

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2. What is the purpose of the public schema?

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

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

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5. Some System Catalog tables are common to all databases in the cluster?

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6. What is the purpose of wal writer?

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

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

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9. System Catalog tables begin with which prefix?

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

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11. What is another name for the postgres process?

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

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

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14. If we create a new tablespace which directory will symbolic links be created from?

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

choose 3

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16. TOAST tables reside in a seperate schema?

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

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

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19. What is the purpose of the template0 database?

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

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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?

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

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3. Which parameters sets the database default isolation level?

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

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5. A phantom read anomaly occurs when?

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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:

7 / 10

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

choose 3

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

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

10 / 10

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

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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. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

2 / 10

2. What does an Item Pointer contain?

choose 3

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

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4. Tuples can also be referred to as columns?

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5. CLOG contains how many bits for each transaction?

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6. When a row is created, its xmin value is set to the transaction ID of which command?

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7. CLOG files are stored in which directory?

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8. Which of the below are true about a Pages Item Pointer?

9 / 10

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

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

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