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. Which fork keeps track of available space within pages?

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

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3. What is the purpose of wal writer?

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

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5. What is the purpose of the postgres database?

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6. System Catalog tables begin with which prefix?

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

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8. Users should not modify the template0 database

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

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

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11. Which fork contains the actual table data?

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

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

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

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15. What is the name of the directory that contains the files related to the Postgres cluster?

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

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17. What is the point of the pg_global tablespace?

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18. What is another name for the postgres process?

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

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

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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 are some of database features we can use to avoid a non repeatable read?

Select more than 1 answer below:

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2. What is the default Isolation Level?

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3. The SQL standard specifies three isolation levels?

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

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

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

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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. non-repeatable read anomaly occurs when?

10 / 10

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

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

2 / 10

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

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3. Information about subtransactions is stored under?

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4. Indexes values also support multi versioning with several versions of an index value existing at any point in time?

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5. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

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

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7. status of a subtransaction is written into CLOG?

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

9 / 10

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

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10. indexes do not use row versioning?

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