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 keeps track of available space within pages?

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2. pg_catalog schema is used to store system catalog tables?

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

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

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5. Which of below are predefined schemas?

choose 2

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

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7. System Catalog tables begin with which prefix?

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8. Which fork contains the actual table data?

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

10 / 20

10. What is the purpose of the template0 database?

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11. Postgres uses a thread based process model?

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

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

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

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

choose 2

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

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17. Tablespaces are used to define physical data layout?

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18. What is the purpose of the postgres database?

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19. What is the purpose of autovacuum?

20 / 20

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

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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 acronym used for the attributes that ensure Data consistency, integrity and durability?

2 / 10

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

choose 3

3 / 10

3. The SQL standard specifies three isolation levels?

4 / 10

4. non-repeatable read anomaly occurs when?

5 / 10

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

6 / 10

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

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7. What is the default Isolation Level?

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

9 / 10

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

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. Which 2 items does a Virtual XID consist of?

2 / 10

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

3 / 10

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

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

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5. In Postgres, tables are often referred to as which of the below?

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

7 / 10

7. The page header stores checksum and the sizes of the other parts of the page?

8 / 10

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

9 / 10

9. CLOG contains how many bits for each transaction?

10 / 10

10. status of a subtransaction is written into CLOG?

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