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.

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

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

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3. What is the purpose of the public schema?

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4. Each Database has its own System Catalog?

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

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6. Files are logically split into pages?

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7. TOAST tables reside in a seperate schema?

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

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

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

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

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

choose 3

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

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

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

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

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17. Users should not modify the template0 database

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

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19. What is the purpose of the template0 database?

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20. Which fork keeps track of available space within pages?

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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. A phantom read anomaly occurs when?

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

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3. Which parameters sets the database default isolation level?

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

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

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

choose 3

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

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8. What is the default Isolation Level?

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9. Which of the below are valid Isolations Levels?

choose 2

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

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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. CLOG files are stored in which directory?

2 / 10

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

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3. Postgres table physical data files are always cross compatible across platforms?

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

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

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

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

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8. Information about subtransactions is stored under?

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

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

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