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 fork contains the actual table data?

2 / 20

2. What is the point of the pg_global tablespace?

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

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

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5. System Catalog tables begin with which prefix?

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

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

choose 2

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8. Each Database has its own System Catalog?

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9. Users should not modify the template0 database

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

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

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12. What is the purpose of autovacuum?

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13. What is the purpose of the postgres database?

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

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15. Who is the Author of the Postgres 14 Internals book?

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16. What is the purpose of the public schema?

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

Choose 2 option

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

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19. Tablespaces can be used to segregate data based on performance needs?

20 / 20

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

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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. The SQL standard specifies three isolation levels?

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

Select more than 1 answer below:

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3. Which of the below are valid Isolations Levels?

choose 2

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4. Which parameters sets the database default isolation level?

5 / 10

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

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

7 / 10

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

8 / 10

8. A phantom read anomaly occurs when?

9 / 10

9. What is the default Isolation Level?

10 / 10

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

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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. UPDATE can be regarded as which 2 separate operations?

2 / 10

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

3 / 10

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

4 / 10

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

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

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

7 / 10

7. CLOG files are stored in which directory?

8 / 10

8. Page header sizes can be easily displayed using the <choose from answers> extension

9 / 10

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

10 / 10

10. Tuples can also be referred to as columns?

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