Practice - Cardinality Ratios (Mapping Cardinalities)
Practice Questions
Test your understanding with targeted questions
What is a one-to-many relationship?
💡 Hint: Think of the employment example.
Give an example of a many-to-many relationship.
💡 Hint: Consider how students choose classes.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a cardinality ratio indicate?
💡 Hint: Think about how entities interact.
True or False: A one-to-many relationship can involve an employee who works for multiple departments.
💡 Hint: Focus on understanding the definitions.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Design an ER model that includes a library system with books, authors, and publishers while showcasing one-to-many and many-to-many relationships.
💡 Hint: Think about how books are created and the roles involved.
Discuss how improper cardinality can lead to data anomalies. Give an example from real-life scenarios.
💡 Hint: Consider the importance of valid relationships.
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Reference links
Supplementary resources to enhance your learning experience.