Which of the following is a group of one or more attributes that uniquely identifies a row?
A. Key
B. Determinant
C. Tuple
D. Relation
Answer: Option A
Solution (By Examveda Team)
Key- A key is a group of one or more attributes that uniquely identifies a row in a table.
Determinant
- A determinant is an attribute in a relation that determines the values of other attributes.
Tuple
- A tuple is a row in a table that contains a set of attributes.
Relation
- A relation is a table in a relational database that contains rows and columns.
Conclusion: The correct option is Key as it is the group of one or more attributes that uniquely identifies a row in a table.
Related Questions on The Relational Model and Normalization
A. A → B.
B. A → C.
C. A → (B,C).
D. (B,C) → A.
A. normal forms.
B. referential integrity constraints.
C. functional dependencies.
D. None of the above is correct.
A relation is in this form if it is in BCNF and has no multivalued dependencies:
A. second normal form.
B. third normal form.
C. fourth normal form.
D. domain/key normal form.

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