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.

1 / 20

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

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2. Users should not modify the template0 database

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

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4. What is the purpose of the template1 database?

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

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6. Postgres uses a thread based process model?

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

Choose 2 option

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

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9. What is the purpose of the public schema?

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

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

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12. Each Database has its own System Catalog?

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

choose 3

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14. What is the point of the pg_global tablespace?

15 / 20

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

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

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17. What is the purpose of the postgres database?

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

19 / 20

19. Tablespaces are used to define physical data layout?

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20. Which fork contains the actual table data?

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

2 / 10

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

3 / 10

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

choose 3

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

5 / 10

5. non-repeatable read anomaly occurs when?

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. The SQL standard specifies three isolation levels?

9 / 10

9. Which parameters sets the database default isolation level?

10 / 10

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

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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. Page free space can often become fragmented?

2 / 10

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

3 / 10

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

4 / 10

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

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

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

7 / 10

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

8 / 10

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

9 / 10

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

10 / 10

10. Tuples can also be referred to as columns?

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