Practice - Closure of a Set of Functional Dependencies (F+)
Practice Questions
Test your understanding with targeted questions
Define functional dependency in your own words.
💡 Hint: Consider how you can derive one attribute knowing another.
What does the closure of a set of functional dependencies represent?
💡 Hint: Think about what it means to infer new information.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does F+ represent?
💡 Hint: Consider what you can deduce from F.
True or False: A functional dependency A → B is trivial if B is a subset of A.
💡 Hint: Think about what 'subset' means in this context.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Given F = {X → Y, Y → Z}, compute the closure of {X, W} and explain each step involved.
💡 Hint: Follow through each dependency and state why it was added.
If the set A = {X, Y} and F = {X → Z, Y → Z}, what can be said about F+? Identify candidate keys based on your findings.
💡 Hint: Consider which attributes fully determine the relation when assessing keys.
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Reference links
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