Database Management Systems (DBMS)
Select the correct name for: a diagram that visually represents entities and their relationships within a database.
Difficulty: Medium
About this MCQ
This Medium Database Management Systems (DBMS) question asks: Select the correct name for: a diagram that visually represents entities and their relationships within a database. The correct choice is D. Entity-Relationship (ER) diagram. Read the options below, commit to one, then use the explanation to see why that choice holds and why the others do not.
Database Management Systems (DBMS) items like this one are written for Pakistan exams such as CSS, FPSC, PPSC, and NTS. The difficulty label is a hint about how much of the topic the stem assumes, not a score. Tags and exam names, when they are present, tell you where else the same idea is tested. Previous and next links stay in Database Management Systems (DBMS) so you can continue the subject. Related questions point at nearby stems if you want another angle on the same idea.
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- A. SQL JOIN
Why not A: “SQL JOIN” does not fit this question. The answer is Entity-Relationship (ER) diagram.
- B. Database trigger
Why not B: “Database trigger” does not fit this question. The answer is Entity-Relationship (ER) diagram.
- C. Database index
Why not C: “Database index” does not fit this question. The answer is Entity-Relationship (ER) diagram.
- D. Entity-Relationship (ER) diagram ✓
Correct answer
D. Entity-Relationship (ER) diagram
Explanation
Entity-Relationship (ER) diagram (option D) is the accepted answer to “Select the correct name for: a diagram that visually represents entities and their relationships within a database.”. Option A (SQL JOIN) does not fit this question. Option B (Database trigger) does not fit this question. Option C (Database index) does not fit this question. For this Database Management Systems (DBMS) question, the accepted answer is Entity-Relationship (ER) diagram.
Source: Database Management Systems (DBMS) Official Reference Guide
Tags: computer science, dbms, SQL, databases
Submitted by: MCQsHub Editorial
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