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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a weak entity set?
💡 Hint: Think about the limitations of identifying the entity by itself.
Question 2
Easy
What does the term 'identifying relationship' refer to?
💡 Hint: It helps associate the weak entity with its parent entity.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is a weak entity set?
- An entity that can stand alone
- An entity without sufficient attributes for identification
- An entity that is always strong
💡 Hint: Consider the characteristics of weak entities.
Question 2
True or False: The identifying relationship must be many-to-one.
- True
- False
💡 Hint: Think about how many weak entities relate to a strong entity.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design an ER diagram that includes a weak entity set for classes with students and grades. Explain the identifying relationship and partial key.
💡 Hint: Think about how you can uniquely identify grades per student.
Question 2
Create a scenario where weak entities could cause problems in data integrity. Propose a solution.
💡 Hint: What happens when there are duplicate names in your data?
Challenge and get performance evaluation