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.

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1. Tablespaces are used to define physical data layout?

2 / 20

2. A single Postgres Instance can server only one database?

3 / 20

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

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

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

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6. What is the purpose of the postgres database?

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

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8. Which 3 databases exist directly after cluster initialization?

choose 3 options

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9. What is the purpose of the template0 database?

10 / 20

10. Which fork contains the actual table data?

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11. What is the point of the pg_global tablespace?

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

Choose 2 option

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

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14. Each Database has its own System Catalog?

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

16 / 20

16. TOAST tables reside in a seperate schema?

17 / 20

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

18 / 20

18. Postgres uses a thread based process model?

19 / 20

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

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

choose 3

2 / 10

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

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3. What is the default Isolation Level?

4 / 10

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

5 / 10

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

6 / 10

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

7 / 10

7. non-repeatable read anomaly occurs when?

8 / 10

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

9 / 10

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

10 / 10

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

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

2 / 10

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

3 / 10

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

4 / 10

4. CLOG contains how many bits for each transaction?

5 / 10

5. Tuples can also be referred to as columns?

6 / 10

6. The page header stores checksum and the sizes of the other parts of the page?

7 / 10

7. When a transaction is committed Postgres uses a special <replace with answer> structure?

8 / 10

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

9 / 10

9. CLOG files are stored in which directory?

10 / 10

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

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