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. TOAST tables reside in a seperate schema?

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

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

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4. Which of below are predefined schemas?

choose 3

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

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6. Tablespaces are used to define physical data layout?

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7. The default Page size is 2k?

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

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

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

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

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12. Users should not modify the template0 database

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13. What is the purpose of the template1 database?

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

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15. System Catalog tables begin with which prefix?

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16. Which fork is specific for unlogged tables?

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17. A Postgres cluster consists of 2 or more physical servers accessing one Postgres Instance?

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18. What is the purpose of the template0 database?

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19. What is the purpose of the public schema?

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

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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 parameters sets the database default isolation level?

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

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

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4. The SQL standard specifies three isolation levels?

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

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

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

9 / 10

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

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

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

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

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

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

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

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

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7. CLOG files are stored in which directory?

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8. A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

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

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

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