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. Tablespaces are used to define physical data layout?

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

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3. The default Page size is 2k?

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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. To be able to restore data consistency, Postgres maintains

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

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7. What is a schema?

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8. What is another name for the postgres process?

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9. What is the purpose of the postgres database?

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

Choose 2 option

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

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12. What is the purpose of wal writer?

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

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

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15. Each Database has its own System Catalog?

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

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17. What is the purpose of the template1 database?

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

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19. Postgres server spawns a new backend session for each connection?

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20. Files are logically split into 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. Which parameters sets the database default isolation level?

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

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

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

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

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6. Which of the below are valid Isolations Levels?

choose 2

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

8 / 10

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

9 / 10

9. non-repeatable read anomaly occurs when?

10 / 10

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

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

choose 2

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

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

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5. status of a subtransaction is written into CLOG?

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

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

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

9 / 10

9. CLOG contains how many bits for each transaction?

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10. Rows of TOAST tables are handled in such a way that they are never update?

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