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

choose 3

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

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3. What is the purpose of the template0 database?

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4. How many files or forks on disk will a 10Mb table with no index have?

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

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6. Each Database has its own System Catalog?

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7. Postgres uses a thread based process model?

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

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

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10. What is another name for the postgres process?

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11. What 3 files/forks as a minimum make up a table on disk?

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12. What is the purpose of autovacuum?

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

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14. Postgres by default has built in connection pooling abilities?

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

Choose 2 option

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

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17. Which fork contains the actual table data?

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

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19. What is the point of the pg_global tablespace?

20 / 20

20. Tablespaces are used to define physical data layout?

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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. What is the default Isolation Level?

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2. A phantom read anomaly occurs when?

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

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

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

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6. The SQL standard specifies three isolation levels?

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

8 / 10

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

9 / 10

9. Which of the below are valid Isolations Levels?

choose 2

10 / 10

10. Which parameters sets the database 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. CLOG files are stored in which directory?

2 / 10

2. When a row is created, its xmin value is set to the transaction ID of which command?

3 / 10

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

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4. at any one time Postgres can have several versions of a row?

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

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6. Which of the below are true about a Pages Item Pointer?

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7. Tuples can also be referred to as columns?

8 / 10

8. What does an Item Pointer contain?

choose 3

9 / 10

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

10 / 10

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

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