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. A single Postgres Instance can server only one database?

2 / 20

2. What is the name of the system catalog table for relations?

3 / 20

3. The default Page size is 2k?

4 / 20

4. Each Database has its own System Catalog?

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

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6. What is the purpose of the template1 database?

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7. What is the purpose of the visibility map?

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

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

10 / 20

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

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

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

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

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

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15. Files are logically split into pages?

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

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

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

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19. What is the point of the pg_global tablespace?

20 / 20

20. TOAST tables reside in a seperate schema?

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

choose 3

2 / 10

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

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

4 / 10

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

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

6 / 10

6. What is the default Isolation Level?

7 / 10

7. Which parameters sets the database default isolation level?

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

9 / 10

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

10 / 10

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

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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. What does an Item Pointer contain?

choose 3

2 / 10

2. CLOG contains how many bits for each transaction?

3 / 10

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

4 / 10

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

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

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

7 / 10

7. The page header stores checksum and the sizes of the other parts of the page?

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8. index row headers like table row headers contain xmin and xmax fields?

9 / 10

9. CLOG files are stored in which directory?

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10. When a transaction is committed Postgres uses a special <replace with answer> structure?

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