Database Management Systems (DBMS)
What is the function or purpose of NoSQL database?
Difficulty: Easy
About this MCQ
This Easy Database Management Systems (DBMS) MCQ checks one syllabus fact.
The question is: “What is the function or purpose of NoSQL database?”
The accepted answer is C. A type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema.. NoSQL database refers to a type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema.
- A. A normalization level in which a table is in second normal form and has no transitive dependencies on the primary key.
Why not A: “A normalization level in which a table is in second normal form and has no transitive dependencies on the primary key.” is not correct. The accepted answer is C. A type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema.. NoSQL database refers to a type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema.
- B. A subset of SQL commands used to manage data within tables, such as INSERT, UPDATE, and DELETE.
Why not B: “A subset of SQL commands used to manage data within tables, such as INSERT, UPDATE, and DELETE.” is not correct. The accepted answer is C. A type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema.. NoSQL database refers to a type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema.
- C. A type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema. ✓
- D. A set of techniques used in a DBMS to ensure correct results for concurrent transaction operations.
Why not D: “A set of techniques used in a DBMS to ensure correct results for concurrent transaction operations.” is not correct. The accepted answer is C. A type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema.. NoSQL database refers to a type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema.
Correct answer
C. A type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema.
Explanation
NoSQL database refers to a type of database designed for storing and retrieving unstructured or semi-structured data without a fixed table schema.
Source: Database Management Systems (DBMS) Official Reference Guide
Tags: computer science, dbms, SQL, databases
Submitted by: MCQsHub Editorial
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