MySQL - JSON Data Types and Functions MCQ

MySQL – JSON Data Types and Functions MCQ

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1. What does JSON stand for?

JavaScript Object Notation

Java Serialized Naming

Java Serialized Object Notation

JavaScript Object Naming

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2. Which MySQL JSON data type is suitable for structured JSON documents with faster access and storage efficiency?

JSONP

JSONB

JSON

JSONC

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3. In MySQL, which JSON data type validates JSON data against the JSON format?

JSONB

JSONP

JSON

JSONC

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4. Which type of data is JSON commonly used for in applications?

Tabular data

Unstructured data

Relational data

Hierarchical data

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5. Which MySQL function is used to create a JSON object from a list of key-value pairs?

JSON_ARRAY

JSON_OBJECT

JSON_SET

JSON_EXTRACT

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6. What is the primary advantage of using JSON data types in MySQL?

Fixed schema definition

Strong data typing

Improved query performance

Support for complex data structures

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7. Which MySQL function removes quotation marks from a JSON string?

JSON_UNQUOTE

JSON_OBJECT

JSON_SEARCH

JSON_ARRAY

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8. What is the primary use of JSON_SEARCH function in MySQL?

Searching for values in JSON data

Creating JSON objects

Extracting values from JSON documents

Modifying JSON documents

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9. What is the purpose of JSON_CONTAINS function in MySQL?

Sorting JSON data

Checking for JSON validity

Modifying JSON documents

Checking if a JSON document contains a value

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10. Which MySQL function is used to merge two or more JSON documents?

JSON_APPEND

JSON_MERGE

JSON_REPLACE

JSON_REMOVE

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11. What does JSON path expression represent in MySQL JSON functions?

A query to retrieve JSON objects

A path to a value in a JSON document

A regular expression

A sequence of SQL queries

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12. What is JSONB indexing in MySQL primarily used for?

Encrypting JSON data

Enhancing the performance of JSON queries

Storing JSON data as text

Compressing JSON data

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13. In MySQL, which JSON function is used to extract a value from a JSON document based on a specified path?

JSON_EXTRACT

JSON_ARRAY

JSON_OBJECT

JSON_UNQUOTE

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14. What type of data does JSONB store in MySQL?

JSON data

JSON in a compressed format

JSON in a binary format

JSON as text

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15. How do JSON data types benefit applications with rapidly evolving data structures?

By requiring explicit data types

By allowing flexible, schema-less data

By enforcing a fixed schema

By limiting data storage

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16. Which type of applications often benefit from using JSON data types in MySQL?

Applications with small datasets

Applications with fixed schemas

Applications with no data structure

Applications with rapidly evolving data

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17. What is the main challenge of using JSON data types in MySQL for data validation?

Lack of JSON functions support

Lack of data integrity enforcement

Lack of support for complex data

Lack of indexing support

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18. How can you create a JSON array from a list of values in MySQL?

Using JSON_ARRAY function

Using JSON_UNQUOTE function

Using JSON_EXTRACT function

Using JSON_OBJECT function

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19. Which MySQL JSON function is used to search for a specified value within a JSON document?

JSON_OBJECT

JSON_CONTAINS

JSON_ARRAY

JSON_SEARCH

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20. What is the primary purpose of the JSON_SET function in MySQL?

Merging JSON data

Updating JSON objects

Modifying JSON documents

Creating JSON arrays

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21. Which JSON data type in MySQL is suitable for storing JSON documents with unpredictable structures?

JSONB

JSONC

JSON

JSONP

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22. How do you update JSON data in MySQL using JSON functions?

By modifying the database schema

By converting JSON to text and back

By using complex regular expressions

By using SQL UPDATE statements

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23. Which MySQL JSON function is used to merge two or more JSON documents?

JSON_REPLACE

JSON_REMOVE

JSON_APPEND

JSON_MERGE

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24. In MySQL, how can you extract a value from a JSON document based on a specified path?

By using the JSON_EXTRACT function

By using the JSON_GET function

By using the JSON_QUERY function

By using the JSON_SEARCH function

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25. What is the primary benefit of using JSONB data type in MySQL for JSON data storage?

Easier data validation

Fixed schema enforcement

Support for complex data types

Faster access and storage efficiency

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26. Which MySQL JSON function is used to remove quotation marks from a JSON string?

JSON_ARRAY

JSON_UNQUOTE

JSON_OBJECT

JSON_SEARCH

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