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. A single Postgres Instance can server only one database?

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2. When PostgreSQL is running what can it be referred to as?

Choose 2 option

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3. What is another name for the postgres process?

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4. How many files or forks on disk will a 10Mb table with no index have?

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5. Postgres uses a thread based process model?

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

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7. What is the purpose of the visibility map?

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

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9. What is the purpose of the public schema?

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10. The default Page size is 2k?

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11. System Catalog tables begin with which prefix?

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12. What is the point of the pg_global tablespace?

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13. What is the purpose of autovacuum?

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

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17. Which fork contains the actual table data?

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

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19. Tablespaces are used to define physical data layout?

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20. How many rows in a page does Postgres aim to have before considering TOAST?

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

2 / 10

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

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

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

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

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7. Which parameters sets the database default isolation level?

8 / 10

8. The SQL standard specifies three isolation levels?

9 / 10

9. Which of the below are valid Isolations Levels?

choose 2

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10. What is the default Isolation Level?

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

2 / 10

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

choose 2

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

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

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5. at any one time Postgres can have several versions of a row?

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

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

8 / 10

8. CLOG Pages are never cached in memory?

9 / 10

9. Information about subtransactions is stored under?

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10. status of a subtransaction is written into CLOG?

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