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) question asks: 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 correct choice is D. SQL JOIN. Read the options below, commit to one, then use the explanation to see why that choice holds and why the others do not.
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- A. Candidate key
Why not A: “Candidate key” does not fit this question. The answer is SQL JOIN.
- B. Foreign key
Why not B: “Foreign key” does not fit this question. The answer is SQL JOIN.
- C. Denormalization
Why not C: “Denormalization” does not fit this question. The answer is SQL JOIN.
- D. SQL JOIN ✓
Correct answer
D. SQL JOIN
Explanation
SQL JOIN is the term that matches “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 fit this question. Option B (Foreign key) does not fit this question. Option C (Denormalization) does not fit this question. For this Database Management Systems (DBMS) question, the accepted answer is SQL JOIN.
Source: Database Management Systems (DBMS) Official Reference Guide
Tags: computer science, dbms, SQL, databases
Submitted by: MCQsHub Editorial
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