Practice Aggregation - 3.9 | Module 3: Entity-Relationship (ER) Model | Introduction to Database Systems
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is aggregation in ER diagrams?

💡 Hint: Think about how relationships can have properties.

Question 2

Easy

Can a relationship have attributes associated with it?

💡 Hint: Recall the WORKS_ON example.

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 does aggregation in an ER diagram represent?

  • A relationship as an entity
  • An entity as a relationship
  • An attribute of an entity

💡 Hint: Think about the concepts we've covered in class.

Question 2

True or False: Aggregation can be used to relate a relationship itself with another entity.

  • True
  • False

💡 Hint: Remember the SPONSOR example.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Consider an organization with multiple projects. How would you model the WORKS_ON relationship using aggregation to include a SPONSOR entity?

💡 Hint: Think about how to visualize this in an ER diagram.

Question 2

Explain how you could design an ER diagram for a scenario where different roles participate in monitoring projects through aggregation.

💡 Hint: Visualize how relationships can connect with multiple roles.

Challenge and get performance evaluation