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.

1 / 20

1. Which 3 databases exist directly after cluster initialization?

choose 3 options

2 / 20

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

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

Choose 2 option

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4. What is the default standard size for a fork file?

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

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

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

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

choose 3

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

10 / 20

10. What is the point of the pg_global tablespace?

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

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

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13. What is the purpose of autovacuum?

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14. What is the purpose of the public schema?

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

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16. What is the purpose of the template0 database?

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17. What is a schema?

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

19 / 20

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

20 / 20

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

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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:

2 / 10

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

3 / 10

3. The SQL standard specifies three isolation levels?

4 / 10

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

5 / 10

5. A phantom read anomaly occurs when?

6 / 10

6. Which parameters sets the database default isolation level?

7 / 10

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

8 / 10

8. Based on Snapshot Isolation use of MVCC which of the below are permitted?

choose 3

9 / 10

9. What is the default Isolation Level?

10 / 10

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. indexes do not use row versioning?

2 / 10

2. status of a subtransaction is written into CLOG?

3 / 10

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

4 / 10

4. Which 2 of the below represent transaction IDs used for row versioning?

5 / 10

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

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6. Information about subtransactions is stored under?

7 / 10

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

8 / 10

8. What does an Item Pointer contain?

choose 3

9 / 10

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

10 / 10

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

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