ER Diagrams (Entity-Relationship Diagrams) are visual representations of a database’s structure, showcasing entities, their attributes, and the relationships among them. They’re crucial in designing relational databases before implementation.
Time limit: 0
Quiz Summary
0 of 15 Questions completed
Questions:
Information
You have already completed the quiz before. Hence you can not start it again.
In an ER diagram, what does a rectangle represent?
Correct
Incorrect
Question 3 of 15
3. Question
What does an ellipse represent in an ER diagram?
Correct
Incorrect
Question 4 of 15
4. Question
A diamond shape in an ER diagram indicates:
Correct
Incorrect
Question 5 of 15
5. Question
Which of the following is a correct example of an entity?
Correct
Incorrect
Question 6 of 15
6. Question
What is a primary key in an ER diagram?
Correct
Incorrect
Question 7 of 15
7. Question
How is a composite attribute shown in an ER diagram?
Correct
Incorrect
Question 8 of 15
8. Question
Which type of attribute cannot be divided further?
Correct
Incorrect
Question 9 of 15
9. Question
How is a derived attribute represented in an ER diagram?
Correct
Incorrect
Question 10 of 15
10. Question
A multivalued attribute in an ER diagram is shown as:
Correct
Incorrect
Question 11 of 15
11. Question
Which relationship describes one entity instance related to exactly one instance of another entity?
Correct
Incorrect
Question 12 of 15
12. Question
How is a many-to-many relationship represented in ER diagrams?
Correct
Incorrect
Question 13 of 15
13. Question
A weak entity is represented by:
Correct
Incorrect
Question 14 of 15
14. Question
A relationship between an entity and itself is called:
Correct
Incorrect
Question 15 of 15
15. Question
Which of the following is the first step in designing an ER diagram?
Correct
Incorrect
Summary
This quiz on SQL ER Diagrams tests your fundamental understanding of ER models, including entities, relationships, attributes, keys, and notations—essential for database design and normalization.
At QuizOrbit, our team specializes in fun, informative quizzes across topics like general knowledge, technology, and entertainment. Boost your knowledge with our expert-designed quizzes.
