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. pg_catalog schema is used to store system catalog tables?

2 / 20

2. What is the point of the pg_global tablespace?

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3. What is the purpose of the template0 database?

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

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5. Tablespaces are used to define physical data layout?

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

choose 2

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7. What is the purpose of the public schema?

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8. What is the purpose of the postgres database?

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9. What is another name for the postgres process?

10 / 20

10. What is the name of the directory that contains the files related to the Postgres cluster?

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

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

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

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14. What is the purpose of autovacuum?

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

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

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17. Files are logically split into pages?

18 / 20

18. Which of below are predefined schemas?

choose 3

19 / 20

19. What is the purpose of wal writer?

20 / 20

20. The default Page size is 2k?

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

3 / 10

3. The SQL standard specifies three isolation levels?

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

5 / 10

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

6 / 10

6. What is the default Isolation Level?

7 / 10

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

8 / 10

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

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

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

2 / 10

2. CLOG Pages are never cached in memory?

3 / 10

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

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

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

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

7 / 10

7. Each page has a layer that usually consists of?

choose 2

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

9 / 10

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

10 / 10

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

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