A relation will be in 2NF of any of the following condition apply
Correct answer: C. Every non-key attribute is functionally dependent on the full set of primary key attributes
- A. The primary key consists of only one attribute
- B. Non-key attribute exists in the relation
- C. Every non-key attribute is functionally dependent on the full set of primary key attributes
- D. All of these
- E. None of these
Explanation
Second normal form (2NF) is a level of database normalization that ensures a relation eliminates partial dependencies. A relation is in 2NF if it satisfies the following conditions:It is in first normal form (1NF), meaning there are no repeating groups of values and all attribute values are atomic (indivisible).Every non-key attribute is fully functionally dependent on the primary key. This means that the value of a non-key attribute can be uniquely determined by the value of the primary key, without relying on any other non-key attribute.
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