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. What is the purpose of the postgres database?

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2. What is the purpose of the template1 database?

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3. Postgres uses a thread based process model?

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4. What is a schema?

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

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6. Each Database has its own System Catalog?

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

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

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

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

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11. Each tablespaces can only be assigned for use by one database

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

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

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14. What is the purpose of wal writer?

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15. System Catalog tables begin with which prefix?

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

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

Choose 2 option

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18. TOAST tables reside in a seperate schema?

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19. It is the postmasters job to listener for incoming connections?

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20. Tablespaces are used to define physical data layout?

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

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

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

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4. Which parameters sets the database default isolation level?

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5. What is the default Isolation Level?

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6. 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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7. A phantom read anomaly occurs when?

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

9 / 10

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

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10. Which of the below are valid Isolations Levels?

choose 2

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

2 / 10

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

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3. CLOG Pages are never cached in memory?

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

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

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

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

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

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9. CLOG contains how many bits for each transaction?

10 / 10

10. virtual IDs exist only in PGDATA/pg_vxid when not cached?

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