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If every non-key attribute is functionally dependent on the primary key, then the relation will be in
  • a)
    First normal form
  • b)
    Second normal form
  • c)
    Third normal form
  • d)
    Fourth normal form
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If every non-key attribute is functionally dependent on the primary ke...
Consider, X → A
Since, X is a non key attribute and A is the prime attribute which in turn is consisting of prime attributes the given relation is free from transitive dependency and hence the given relation will be in 3NF.
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Most Upvoted Answer
If every non-key attribute is functionally dependent on the primary ke...
Explanation:

First Normal Form (1NF):
- In 1NF, all attributes must have atomic values and each column should contain only one value.
- If every non-key attribute is functionally dependent on the primary key, it ensures that each attribute contains only one value.

Second Normal Form (2NF):
- In 2NF, a relation is in 1NF and every non-key attribute is fully functionally dependent on the primary key.
- If every non-key attribute is functionally dependent on the primary key, it satisfies the requirements of 2NF.

Third Normal Form (3NF):
- In 3NF, a relation is in 2NF and no non-key attribute is transitively dependent on the primary key.
- If every non-key attribute is functionally dependent on the primary key, without any transitive dependencies, then the relation is in 3NF.
Therefore, if every non-key attribute is functionally dependent on the primary key, the relation will be in the Third Normal Form (3NF). This ensures the elimination of any transitive dependencies and helps in maintaining data integrity and reducing redundancy in the database design.
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If every non-key attribute is functionally dependent on the primary key, then the relation will be ina)First normal formb)Second normal formc)Third normal formd)Fourth normal formCorrect answer is option 'C'. Can you explain this answer?
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