Postgres Quiz Archive

You have 200 seconds to answer 20 Random questions so think fast!

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

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2. Each Database has its own System Catalog?

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3. What is a schema?

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4. Which fork contains the actual table data?

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

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6. Which of below are predefined schemas?

choose 3

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

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

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9. The information_schema schema provides information on Postgres release notes?

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

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11. Tablespaces are used to define physical data layout?

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12. A Postgres cluster consists of 2 or more physical servers accessing one Postgres Instance?

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

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14. What is the purpose of the postgres database?

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15. TOAST tables reside in a seperate schema?

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16. Files are logically split into pages?

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

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

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

20 / 20

20. What is the purpose of autovacuum?

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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. Which parameters sets the database default isolation level?

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

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

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

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

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

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8. Which of the below are valid Isolations Levels?

choose 2

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

choose 3

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

2 / 10

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

3 / 10

3. Which 2 items does a Virtual XID consist of?

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

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5. CLOG Pages are never cached in memory?

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

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

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

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

10 / 10

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

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