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. Which 3 databases exist directly after cluster initialization?

choose 3 options

2 / 20

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

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3. What is the name of the mechanism used to store a row bigger than a page size?

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

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5. What is the purpose of the template1 database?

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6. Each Database has its own System Catalog?

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7. How many rows in a page does Postgres aim to have before considering TOAST?

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

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

10 / 20

10. Tablespaces are used to define physical data layout?

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

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12. What is the name of the catalog that stores metadata for all cluster objects?

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13. Which of below are predefined schemas?

choose 3

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14. TOAST tables reside in a seperate schema?

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

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16. System Catalog tables begin with which prefix?

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

Choose 2 option

18 / 20

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

19 / 20

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

20 / 20

20. What is the purpose of the template0 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. The more locks a transaction acquires, the better it is isolated from other transactions?

2 / 10

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

3 / 10

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

4 / 10

4. At any moment the database system can contain several versions of one and the same row?

5 / 10

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

6 / 10

6. Which of the below are valid Isolations Levels?

choose 2

7 / 10

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

8 / 10

8. The SQL standard specifies three isolation levels?

9 / 10

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

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

2 / 10

2. What does an Item Pointer contain?

choose 3

3 / 10

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

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4. Information about subtransactions is stored under?

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

6 / 10

6. status of a subtransaction is written into CLOG?

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7. Tuples can also be referred to as columns?

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8. CLOG contains how many bits for each transaction?

9 / 10

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

10 / 10

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

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