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

2 / 20

2. Which fork is specific for unlogged tables?

3 / 20

3. Tablespaces are used to define physical data layout?

4 / 20

4. Which of below are predefined schemas?

choose 2

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5. What is another name for the postgres process?

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6. Which of below are predefined schemas?

choose 3

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7. System Catalog tables begin with which prefix?

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

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

10 / 20

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

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

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12. What is the purpose of wal writer?

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

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

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

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

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

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

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19. If we create a new tablespace which directory will symbolic links be created from?

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

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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. non-repeatable read anomaly occurs when?

2 / 10

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

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

4 / 10

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

choose 3

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

Select more than 1 answer below:

6 / 10

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

7 / 10

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

8 / 10

8. Which parameters sets the database default isolation level?

9 / 10

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

10 / 10

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

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

2 / 10

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

3 / 10

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

4 / 10

4. Information about subtransactions is stored under?

5 / 10

5. status of a subtransaction is written into CLOG?

6 / 10

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

7 / 10

7. CLOG Pages are never cached in memory?

8 / 10

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

9 / 10

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

10 / 10

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

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