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. Tablespaces are used to define physical data layout?

2 / 20

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

3 / 20

3. What is the name of the 2 default tablespaces created after initialization?

choose 2

4 / 20

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

5 / 20

5. Which of below are predefined schemas?

choose 3

6 / 20

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

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7. TOAST tables reside in a seperate schema?

8 / 20

8. What is the point of the pg_global tablespace?

9 / 20

9. What is the purpose of autovacuum?

10 / 20

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

11 / 20

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

12 / 20

12. Which fork contains the actual table data?

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13. Which fork is specific for unlogged tables?

14 / 20

14. Files are logically split into pages?

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

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

17 / 20

17. The pg_default tablespace should never be used to create user tables?

18 / 20

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

choose 3

19 / 20

19. What is the purpose of the visibility map?

20 / 20

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

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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. The SQL standard specifies three isolation levels?

3 / 10

3. Which of the below are valid Isolations Levels?

choose 2

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

5 / 10

5. non-repeatable read anomaly occurs when?

6 / 10

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

7 / 10

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

choose 3

8 / 10

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

9 / 10

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

Select more than 1 answer below:

10 / 10

10. What is the default Isolation Level?

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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. The page header is located in the highest address?

2 / 10

2. CLOG files are stored in which directory?

3 / 10

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

4 / 10

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

5 / 10

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

6 / 10

6. status of a subtransaction is written into CLOG?

7 / 10

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

8 / 10

8. Page free space can often become fragmented?

9 / 10

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

10 / 10

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

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