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

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

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3. What is the name of the mechanism used to store a row bigger than a page size?

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

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

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

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

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8. What is the purpose of autovacuum?

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9. What is the purpose of the postgres database?

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

choose 3

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

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12. Tablespaces are used to define physical data layout?

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

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

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15. What is the name of the 2 default tablespaces created after initialization?

choose 2

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

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17. Each Database has its own System Catalog?

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18. What is the point of the pg_global tablespace?

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

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

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

2 / 10

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

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

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4. The SQL standard specifies three isolation levels?

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

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6. Which of the below are valid Isolations Levels?

choose 2

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7. Which parameters sets the database default isolation level?

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

9 / 10

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

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

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

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3. Information about subtransactions is stored under?

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

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

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

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7. Each page has a layer that usually consists of?

choose 2

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8. CLOG contains how many bits for each transaction?

9 / 10

9. Which 2 items does a Virtual XID consist of?

10 / 10

10. Tuples can also be referred to as columns?

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