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 is specific for unlogged tables?

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2. System Catalog tables begin with which prefix?

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

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

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5. The default Page size is 2k?

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

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

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

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

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

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

Choose 2 option

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12. What is the purpose of the public schema?

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

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14. What is the name of the system catalog table for relations?

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

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

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

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18. What is a schema?

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19. To be able to restore data consistency, Postgres maintains

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

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

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2. What is the default Isolation Level?

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

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

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

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6. Which parameters sets the database default isolation level?

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7. Lost updates are forbidden by the standard at all isolation levels?

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8. A phantom read anomaly occurs when?

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

choose 3

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

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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. Information about subtransactions is stored under?

2 / 10

2. status of a subtransaction is written into CLOG?

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

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4. What does an Item Pointer contain?

choose 3

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

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

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7. CLOG contains how many bits for each transaction?

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8. Rows of TOAST tables are handled in such a way that they are never update?

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

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10. CLOG files are stored in which directory?

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