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

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2. System Catalog tables begin with which prefix?

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

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

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5. Users should not modify the template0 database

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

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

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

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

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10. Each Database has its own System Catalog?

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

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12. The default Page size is 2k?

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13. Postgres server spawns a new backend session for each connection?

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

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15. Which of the below objects can be referred to as relations?

choose 3

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16. What is the purpose of the template0 database?

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

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

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19. Tablespaces are used to define physical data layout?

20 / 20

20. Some System Catalog tables are common to all databases in the 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. At any moment the database system can contain several versions of one and the same row?

2 / 10

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

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3. non-repeatable read anomaly occurs when?

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4. Which parameters sets the database default isolation level?

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

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

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7. What is the default Isolation Level?

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8. The more locks a transaction acquires, the better it is isolated from other transactions?

9 / 10

9. The SQL standard specifies three isolation levels?

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

2 / 10

2. To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

3 / 10

3. virtual IDs exist only in PGDATA/pg_vxid when not cached?

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

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5. Information about subtransactions is stored under?

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

8 / 10

8. indexes do not use row versioning?

9 / 10

9. status of a subtransaction is written into CLOG?

10 / 10

10. Which 2 of the below represent transaction IDs used for row versioning?

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