Database Management Systems (DBMS)
Which of the following best names the concept in which an SQL operation that combines rows from two or more tables based on a related column?
Difficulty: Medium
About this MCQ
This Medium Database Management Systems (DBMS) MCQ checks one syllabus fact.
The question is: “Which of the following best names the concept in which an SQL operation that combines rows from two or more tables based on a related column?”
The accepted answer is D. SQL JOIN. SQL JOIN is the person body or term that satisfies Which of the following best names the concept in which an SQL operation that combines rows from two or more tables based on a related column option D Option A Candidate key does not match the stem it is a near-miss used to catch incomplete recall of SQL JOIN Option B Foreign key does not match the stem it is a near-miss used to catch incomplete recall of SQL JOIN Remaining alternatives Denormalization fall outside the same rule and should be eliminated once SQL JOIN is identified Database Management Systems DBMS questions of this type reward precise definitions rather than approximate associations Database Management Systems DBMS recall of this distinction.
- A. Candidate key
Why not A: “Candidate key” is not correct. The accepted answer is D. SQL JOIN. SQL JOIN is the person body or term that satisfies Which of the following best names the concept in which an SQL operation that combines rows from two or more tables based on a rel
- B. Foreign key
Why not B: “Foreign key” is not correct. The accepted answer is D. SQL JOIN. SQL JOIN is the person body or term that satisfies Which of the following best names the concept in which an SQL operation that combines rows from two or more tables based on a rel
- C. Denormalization
Why not C: “Denormalization” is not correct. The accepted answer is D. SQL JOIN. SQL JOIN is the person body or term that satisfies Which of the following best names the concept in which an SQL operation that combines rows from two or more tables based on a rel
- D. SQL JOIN ✓
Correct answer
D. SQL JOIN
Explanation
SQL JOIN is the person body or term that satisfies Which of the following best names the concept in which an SQL operation that combines rows from two or more tables based on a related column option D Option A Candidate key does not match the stem it is a near-miss used to catch incomplete recall of SQL JOIN Option B Foreign key does not match the stem it is a near-miss used to catch incomplete recall of SQL JOIN Remaining alternatives Denormalization fall outside the same rule and should be eliminated once SQL JOIN is identified Database Management Systems DBMS questions of this type reward precise definitions rather than approximate associations Database Management Systems DBMS recall of this distinction.
Source: Database Management Systems (DBMS) Official Reference Guide
Tags: computer science, dbms, SQL, databases
Submitted by: MCQsHub Editorial
Related MCQs
- A set of properties (Atomicity, Consistency, Isolation, Durability) that guarantee reliable database transacti...
- The concept in which a database structure that improves the speed of data retrieval operations on a table is b...
- Normalization is best defined as which of the following?
- Identify the correct definition of Database index.
- Identify the correct concept described as: the process of organizing database tables to reduce data redundancy...
- What term describes the following? a sequence of one or more database operations executed as a single logical...