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. Postgres by default has built in connection pooling abilities?

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

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3. Each Database has its own System Catalog?

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

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5. Files are logically split into pages?

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

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

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8. What is the point of the pg_global tablespace?

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

10 / 20

10. Which fork is specific for unlogged tables?

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11. Tablespaces are used to define physical data layout?

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

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

choose 3

14 / 20

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

15 / 20

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

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16. What is the purpose of the visibility map?

17 / 20

17. TOAST tables reside in a seperate schema?

18 / 20

18. Postgres uses a thread based process model?

19 / 20

19. To be able to restore data consistency, Postgres maintains

20 / 20

20. What is another name for the postgres process?

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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?

2 / 10

2. A phantom read anomaly occurs when?

3 / 10

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

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

choose 3

5 / 10

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

6 / 10

6. Which of the below are valid Isolations Levels?

choose 2

7 / 10

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

8 / 10

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

9 / 10

9. What is the default Isolation Level?

10 / 10

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

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

2 / 10

2. Postgres table physical data files are always cross compatible across platforms?

3 / 10

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

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

5 / 10

5. Page free space can often become fragmented?

6 / 10

6. The page header is located in the highest address?

7 / 10

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

8 / 10

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

9 / 10

9. index row headers like table row headers contain xmin and xmax fields?

10 / 10

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

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