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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define a functional dependency with an example.
💡 Hint: Think about how you can uniquely identify information.
Question 2
Easy
What is a trivial functional dependency?
💡 Hint: Consider examples where parts are components of a whole.
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 A → B represent in a functional dependency?
- A determines B
- B determines A
- A and B are equal
💡 Hint: Think about how one can lead to the other.
Question 2
True or False: A trivial functional dependency is always true.
- True
- False
💡 Hint: Consider the subset relationships.
Solve 3 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given the set of attributes A, B, and C, with functional dependencies A → B and A, C → B, prove the closure of A.
💡 Hint: Break down the relationships step-by-step.
Question 2
In a relation with the attributes StudentID, CourseID, and Instructor, if you know the FDs: StudentID → CourseID and CourseID → Instructor, explain why StudentID can determine the Instructor.
💡 Hint: Follow the chain of dependencies.
Challenge and get performance evaluation