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Questions and Answers
Which of the following is an example of a valid functional dependency?
Which of the following is an example of a valid functional dependency?
- {roll_no, name} → name (correct)
- {dept_name} → dept_building
- dept_building → roll_no
- {name} → roll_no
What type of functional dependency is characterized by a dependent always being a subset of the determinant?
What type of functional dependency is characterized by a dependent always being a subset of the determinant?
- Non-Trivial functional dependency
- Trivial functional dependency (correct)
- Transitive functional dependency
- Multivalued functional dependency
Which of the following is an example of an invalid functional dependency?
Which of the following is an example of an invalid functional dependency?
- {roll_no, name} → dept_building (correct)
- {name} → roll_no
- dept_building → roll_no
- {dept_name} → dept_building
In the context of functional dependencies, what does the determinant refer to?
In the context of functional dependencies, what does the determinant refer to?
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Which of the following is an example of a valid functional dependency based on the given properties?
Which of the following is an example of a valid functional dependency based on the given properties?
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What rule allows inferring a new valid dependency if X → Y and Y → Z are both valid dependencies?
What rule allows inferring a new valid dependency if X → Y and Y → Z are both valid dependencies?
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