Multivalued dependencies should be eliminated in relations
Correct answer: C. Always
- A. Seldom
- B. Never
- C. Always
- D. Commonly
Explanation
In relational database design, a multivalued dependency (MVD) occurs when a single value in one attribute determines a set of possible values in another attribute, even after considering the whole primary key. This can lead to data redundancy and inconsistencies. Third Normal Form (3NF) is a level of database normalization that specifically aims to eliminate multivalued dependencies. By ensuring that all non-key attributes depend solely on the entire primary key, 3NF prevents a single value in one attribute from dictating multiple values in another. This helps to streamline data organization and reduce the risk of errors
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